People who say 'I need to ask you a favor', and then proceed to ask without checking if it's okay with you.
That's not nearly as bad as those who actually ask and don't wait for a response: "Can I ask you a favor? Can you please..."
Or: "Can you lower the a/c, thanks"Why are you thanking me before I decide what to answer you?
When multiple members put up the same Avatar...
Repost!
Even worse when 2 members have the same avatar...
When you are trying to help someone in a thread and you ask them a question and they answer you via pm.
+1
Should we PM him +1s?
People who double park by an empty spot!!!
pretty much anyone who has an aol or hotmail email account
are you discriminating against yahoo and comcast??