Leaving sexual ethics and the non-reproductive functions of 'hanky-panky' and indeed kissing to whoever wants to start an off topic thread.

The centralisation of debate onto organs like Facebook could limit the exposure some people get to other sources of information and leave dogmatically held fallacies (some worse than Lucas having an original vision which the SE of the hour represents) unchecked.

On the plus side it would hopefully be more difficult to delete accounts or posts if people like SW.com or TFN.com moved their discussion forums onto social networks (well, when talking about Star Wars anyway).

I just hope OT.com lasts at least forever.