I think the logic is that there are some very interesting posts here & not everyone's logged in all the time, but may be following the HL twitter &/or FB feeds.
So if you got wind of a secret gig or (if hell freezes over) a new single etc. being able to fire it out into the twittersphere or FB-sphere (is that correct?) will give it quite a lot of attention pretty quickly.
It's all down to personal preference of course (I loathe Farcebook with a passion for example), but it can give the forum & its discussions the maximum attention (which I think it deserves).
The button clicking will only send the first few words & a URL, so people are led straight back to HL to read the whole topic.
Ergo: more people, potentially more discussion & more insanity
