XMPP sender allows to send notifications about new comments in blog using XMPP protokol (you know it. This is a jabber. For example, it used in Google Talk).You can customize it to send notifications to blog admin or(and) post author about all comments. 
 Message can include comment author, his email, comment content, post title etc. The plugin includes a little template manager that give you possibility to make your own messages. You can change interface language (russian an english included). 
!!!—> It can override email function to xmpp. You can use very good plugins like “WordPress Thread Comment” or “Subscribe to Comments” to receive notifications about different events on XMPP!
It should work with previouse versions of wordpress, but i didn’t test it.
<h3>ToDo</h3>
<h3>Versions history</h3>
0.9
* XMPPHP version updated (to XMPPHP 0.1 RC2 Rev 77)
0.3 
*Translation is made using standard method (text domain etc) only English and Russian now. Who want to translate into his own language – write me. 
*Added option for overriding email function to xmpp. You can use very good plugins like “WordPress Thread Comment” or “Subscribe to Comments” to receive notifications about different events on XMPP!
0.2 
*Translation is made using arrives in inglish and Russian (i will correct it in future) 
*Added options for server port, message template
0.1 
*First version/ It works!!! Really!!! 🙂 
*It has some options (server, emails etc)
*/

XMPP sender

XMPP sender allows to send (and receive) notifications about new comments in blog. Also it can override email function to xmpp for your blog.

Jehan

This plugin enables the blog owner to publish their posts on a xmpp pubsub 
node. This way, anyone subscribed to this same node will be notified through 
Jabber when a new post is published.
It enables also to do the same with comments on separated xmpp pubsub nodes, so 
that readers can also subscribe and get notified about new comments of a 
specific post only if prefered.
Note: this is a early version, you can try it if you are interested (there can 
be no harm! ;-), but I will provide far better versions progressively…
<h4>Detailed Features</h4>
<ul>
<li>Connection with SRV records, TLS if available and known authentication 
mechanisms (in this order of preference): Digest-MD5, CramMD5, PLAIN, 
ANONYMOUS.</li>
<li>Posts are published on the subnode posts/ of the given pubsub node;</li>
<li>Comments are published on the subnode comments/ with being the id 
of the corresponding post;</li>
<li>Posts, as well as comments, are deleted automatically from the associated 
pubsub nodes if you delete them, disapprove them, or flag them as spam from the WordPress website;</li>
<li>Posts, as well as comments, are updated automatically on the associated 
pubsub nodes if you edit them on your WordPress website;</li>
<li>Autodiscover xmpp link for all posts is automatically set on all pages, 
except single posts (if the ‘wp_head’ function is used by your theme, which is 
the common procedure);</li>
<li>Autodiscover xmpp link for comments of the current post is automatically set 
on each single post (if the ‘wp_head’ function is used by your theme, which is 
the common procedure);</li>
<li>2 templates functions for returning or displaying different xmpp links are 
provided for your themes.</li>
</ul>
<h3>Configuration</h3>
In the ‘Jabber Feed configuration’ menu, you will see the following sections:
<h4>Publishing Account</h4>
This section contains the connection parameters of the account which will be 
used to publish the field. I would personnaly advice to create a new account 
just for it (you can also use your personal account of course, anyway the plugin’s 
bot will create a resource identifier unique for every connection) and to 
configure it to refuse any contact and communication (as noone will have to 
add it to one’s roster, except you maybe for test or debugging purpose?). 
The fields are:
<ul>
<li>The bot adress (full jid form: mybotname@myserveraddress);</li>
<li>the password.</li>
</ul>
<h4>Connection Parameters</h4>
By default Jabber Feed can now use SRV records which is a recommended way to 
advertize server and port from a domain name (see for instance 
http://dns.vanrein.org/srv/ for details).
This is an advanced section in case your server does not use SRV AND uses a server 
which is not the same as the domain from the jid or a port different from the default one (5222).
Hence there will be very very new cases where you will have to fill this 
section and if you don’t understand all what I say here, just don’t fill 
anything here (if you fill even only one field, then it will be used instead 
of SRV and default values).
The default values will be used if fields empty and no SRV is configured on 
the Jabber server:
<ul>
<li>the Jabber server (often the same as ‘myseveraddress’ of the jid);</li>
<li>the Jabber port (usually 5222).</li>
</ul>
<h4>PubSub configuration</h4>
Where to publish the notifications. It can be on a separate server.
<ul>
<li>the pubsub server;</li>
<li>the root publication node;</li>
<li>2 checkboxes to uncheck if you don’t want to publish the posts or the comments.</li>
</ul>
Note that this node does not have to exist. When you will press the “Update” 
button, the providden Jabber login and connection parameters will be tested 
and the node will be created with all its tree. If anything goes wrong, you 
will be informed about it.
The providden Jabber account can have no right to create the required post/ 
node, but then it must be created first and publisher rights at least must 
have been given.
<h3>Manage Posts</h3>
The page with the list of published posts have been modified. A new column 
called “Jabber Feed” will display: 
* The publication date on the node (and the last update will appear on a 
bubble when the mouse passes by); 
* ‘Error on publication’ when an error has occured during publication (and the 
error text will be displayed when the mouse passes by); 
* ‘Not Published’ when no publication never occurred (which is simply when the post has 
 been published on WordPress before the plugin has been installed.
<h3>Todo</h3>
<ul>
<li>
TTL support for DNS/SRV records.
</li>
<li>
Still need to test extensively (and if necessary improve) the right system 
in WordPress:
<ul>
<li>will the non-approved comments be published on the comment nodes?</li>
<li>will the private posts be published?</li>
</ul>
</li>
<li>
In the “configuration” window, I should make a detection of the 
prerequisites, gray everything if a mandatory one is not fulfilled and give an 
explanation text.
</li>
<li>
And what about internationalization?!
</li>
<li>
Manage menu: with failed publication, it should be possible to retry the 
publication from this page (with multiple checkbox if possible to massively 
run publication!).
</li>
<li>
And what about an equivalent of post management for comments?! Is it 
possible (apparently not, according to WordPress documentation)?
</li>
<li>
The item should also be updated when a published post is edited.
</li>
<li>
Why not add support to pages? -> current work.
</li>
<li>
Create the bot account as well?
</li>
<li>
Why not retry to publish after a timer (let’s say 1 day?) after a failure, 
with a number maximum of tries?
</li>
<li>
What could be fun: if the subscribers could be also publisher, hence 
answering to a post by directly publishing to the node? 
But how is a publisher identified?! No “from” with a pseudo in it, and data 
about real jid accessible from admin.
</li>
<li>
Improve globally the 
message syntax (for instance the message ‘updated’ and ‘created’ tags).
</li>
<li>
Configure the node instead of simply create it with default configuration.
</li>
<li>
Check the node authorizations if it is already existing.
</li>
<li>
Improve the internationalization strings (and set at least 2 default 
languages: English and French).
</li>
<li>
And what if the post or page is private? Should it be added on a node? Maybe 
a node with a white list that the admin can manage?
</li>
<li>
Apparently if I disapprove or flag a comment as spam from the “edit comment” 
page, it does not remove it from the node. Why? Is it a bug from WordPress 
which does not trigger the action in all cases? Or is there another WordPress’ 
action for this specific case? Try this also with posts from the “edit post” 
page. 
Edit: it seems to be a known bug: https://trac.wordpress.org/ticket/5792 
Is planned to be fixed for WordPress 2.9 apparently. 
=> this seems to be fixed now! Woohoo!
</li>
<li>
Add more authentication mechanisms? (current: Digest-MD5, CramMD5, PLAIN, 
ANONYMOUS. Only Digest-MD5 and PLAIN has been tested)
</li>
<li>
SSLv23 added, but what about TLS? (TLS does not work on Gmail. SSL and TLS works on ejabberd. So 
I have decided to use SSL only for now) 
Note that it looks like the PHP implementation of TLS encryption does not seem 
like verifying the certificate…
</li>
<li>
Add poster/commenter name in ATOM format. 
Poster’s name 
http://tools.ietf.org/html/rfc4287
</li>
<li>
Add support for button of publishing all posts in once…
</li>
<li>
Propose max_items to change…
</li>
<li>
Improve title naming (different for comments, posts, and even for comments 
of each posts…)
</li>
<li>
Isn’t there a configuration option for getting notif of subnodes?.. Seem to 
remind yes.
</li>
</ul>
<h3>Contacts</h3>
You can have some news about this plugin on <a href="http://jehan.zemarmot.net" title="my public diary" rel="nofollow ugc">my freedom 
haven</a> or of course, by 
subscribing on the following xmpp pubsub node: 
http://jehan.zemarmot.net/blog/category/technologies/programmation/jabber-feed/feed/ 
If you want to contact me by jabber, ask me first by email (which you can find 
on my website. Yes I know, this is complicated: but I like my tranquility, so 
I make a filter).
Have a nice life!

Jabber Feed

This plugin feeds Jabber server pubsub nodes when new posts are published on Wordpress and comments are added.

XMPP sender vs Jabber Feed