Dragging this forum into the world of 2012 I've added social networking icons to the bottom of each thread page. Via these icons you can "Like" the topic on Facebook, "Tweet" the topic on Twitter and "+1" the topic on Google+
Note that the Google+ icon doesn't play well with IE before version 9 (maybe 8...) so if you are using an earlier version of IE you may not see it. My browser of choice is Google Chrome. IE just has too many quirks in it so I gave it up a while ago. Don't miss it either!
So if you think a topic under discussion might be of interest to your Facebook/Twitter/Google+ friends, please give the appropriate icon a click.