Things people do that pissed me off today:

1) Email me asking a question and when I go to respond, I find that they have some sort of spam blocker tech in place that asks me to jump through hoops. Needless to say, I don't bother and they don't get their answer. If they want to hear back from me they should be courteous enough to pre-approve me.

2) Re-print my articles on their websites and don't attribute them to me.