Michal Ozogan

This plugin will allow visitor to submit they twitter, while thay are commenting your posts. They account will by showed as twitter follow button.
Registred users can add their twitter account in profile administration.
There is also a setting page where you can edit color, size, showing count and language.
Some themes dont’t use function <code><?php comment_form(); ?></code> to show comment form. In this case you have to edit your template. Find comments.php and add
<pre><code><label for="twitter">Twitter</label><input name="twitter" size="30" type="text" value=''/>
</code></pre>
to form.

Twitter follow button in coments

Allow your visitors to add their twitter.

Matthias Pfefferle

julien51

This widget adds a <a href="http://www.subtome.com/" rel="nofollow ugc">SubToMe</a> button to your WordPress blog. This button allows your readers to follow your blog using their favorite applications.
If the user clicks the button, then, it will load an external iframe with JavaScript. The iframe will show the user the list of their favorite subscription tools. Once they pick one, they’re redirect to it with your blog information.
The user information is stored in the browser, but is only accessible on the domain <code>subtome.com</code>, which is why we have to load the iframe.
No data is ever “leaked”. The whole <a href="https://github.com/superfeedr/subtome" rel="nofollow ugc">SubToMe code</a> is open source. Feel free to check it out by yourself.
<h3>Credits</h3>
<a href="https://github.com/tommcfarlin/WordPress-Widget-Boilerplate" rel="nofollow ugc">WordPress Widget Boilerplate</a>, <a href="http://notizblog.org/" rel="nofollow ugc">Matthias Pfefferle</a> for his precious help, mostly with version 1.3!

SubToMe

This widget adds a SubToMe button to your blog and allows people to subscribe to your content in one click.

Twitter follow button in coments vs SubToMe