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 emacsian

emacsian owed a beer to codeshepherd for just like that!. about 3 months ago