what's this thing?

To owe your Tweeps a beer, @-reply to tweetbeer like this: 
@tweetbeer @mattallen for the memories
Tweetbeer will let your Tweep know about their cold one and record the debt here for later collection and posterity.

thankyous & thankings for Tom_Voirol

Tom_Voirol owed a beer to mcannonbrookes for not hiring me. But he just brought me one so that's OK. about 3 months ago