phplaw

Why you need use this plugin: because the default regisration page of wordpress is too simple and It does not allow you to add more 
information to introduce about your site, also if you want to customize a page where you can put more information to introduce about your site 
or display more fields to collect more information from new user, this plugin is right choice for you It will help you to do that without have to modify wordpress core source code. 
This plguin allow you to show a registration form for a specific page, 
It is really simple just add [registration_form] shortcut to content of a page. 
If you have any question, suggest features for this plugin, 
Please let me know by send me an email: phplaw@gmail.com 
or you can send message to me via Skype: conan_tpn

Registration Page Shortcut

We are going to add more feature to this plugin
1. Customize roles when registration
2. Add ability to config extra field in admin
3. Customize message after registration successfully.



This plugin compatible with the latest version

Plugin allow you to create a page that will display registration form for your user registers.

mahlzeit

You invoke a macro by typing a special command in your blog post:
[[keyword]]
Upon reading this command, the PHP function named “macro_keyword” is called and 
its output is inserted on the page.
You can also pass a parameter to the macro:
[[keyword][param]]
Or multiple parameters:
[[keyword][param1][param2]]
The parameters are separated by the ][ characters, or rather, you can look at it 
as a list of things in brackets surrounded by another pair of brackets.
The PHP file for this plugin has an example function that shows you how to write 
macros. It is called “[[test]]” and is defined in the function “macro_test”. The 
“test” macro takes up to two parameters, both optional.
New in 1.1: If you want to include the macros in RSS content, you will have to 
define a second function named “macro_rss_keyword”. If this function is not 
present, the macro will not be included in the RSS output.
<h3>Known Issues</h3>
<ul>
<li>
This is a quick hack, not extensively tested but it seems to work for me.
</li>
<li>
WordPress already adds the
</li>
</ul>
 and 
tags around the [[keyword]] before 
 the plugin is called — the plugin doesn’t remove those.
<ul>
<li>
You can’t use ” and ‘ (and possibly a handful of other characters) in 
parameters because WordPress replaces them with curly quotes before the 
plugin has a chance to parse them. You can use spaces, though.
</li>
<li>
Maybe pass an $is_rss parameter instead of using 2 separate functions?
</li>
<li>
Maybe change syntax to:  ?!
</li>
</ul>
<h3>About</h3>
<ul>
<li>
Version 1.1 (8 June 2007) – The parameter separator is now ][ instead of |. 
Added macro_rss_* functions for the RSS content.
</li>
<li>
Version 1.0 (7 June 2007) – First version
</li>
</ul>
Written by Matthijs Hollemans
http://www.hollemansproductions.com/wordpress-macro-expander-plugin.html

Macro Expander

Replaces user-defined keywords in a blog post with the output from the corresponding user-defined PHP function.

Registration Page Shortcut vs Macro Expander