Is there a Twitter Follow Button?

The v6.1 release (due out in April) will have the full complement of additional Twitter and Google+ buttons. The latest 6.0 release overhauled how we can add additional buttons to make it much simpler to add them.. now we're planning to add lots more for the providers we currently support as well as additional social networks we don't support yet.

I hope that helps answer your question,
Alex