This mod is just awesome.
Installed it, and it does appear to work.
Now, just a thing:
If you are using a custom template, the changes applied by this mod will not show at all, so, you'll require to actually make manual changes to "index.template.php" in order to get this one working.
Basically, go to the MOD simplemachine's page and follow the manual installation steps for this MOD and file, just be sure that you end with a "valid" php file, because since you are using a custom template, is very likely you'll require a bit of PHP knowledge to implement certain things correctly.
Also, it is possible to implement this MOD to your website once it has been installed and it is working.
You'll require, basically, copy all javascripts used for facebook from your forum to our page and it will succeed.
You can see it working on a website here: hxxp://anime-age.com/noticias.php