I seem to have the 'Like' button on here, and in FB there is a mention of vBulletin down the side which takes me to vBulletin discussions, not SBA ones. The 'Connect' button does nothing for me.

There is a Facebook integration package which you can buy (was $99, may be more now). Don't plan getting that - I'm just using the Facebook options buried in vB 4.

Weird.