

Note that you need to have claimed your Facebook e-mail account before the Send button will function. Here's a Facebook Developers discussion on this point; a poster describes this requirement in the thread.
This was a pretty easy upgrade and I like the result, though embedding the plugins in the context of XTF's structure made it more challenging.
Postscript: I obtained much better results for pulling in the comments stream for the Comments plug-in by mounting the information pages on an Apache server, instead of Tomcat 6. When the info pages were served by Tomcat, the comments stream pages were frequently truncated, with a status bar appearing on the screen indicating the content was being loaded.