My #1 annoyance: People who ask for help, then ask for it again, without any evidance of haivng taken the first advice, or giving reasons why they did not. (OK, that may be construed as picking on my fellow-monk, but I didn't name names.) #2..Inf will come when I have more time.
Actualy, #2 will come now: People who nitpick code given as off-the-cuff ideas. And #3, people who think spelling is important, even when they understand what was said perfectly.
I've probably done all of those, of course.
Warning: Unless otherwise stated, code is untested. Do not use without understanding. Code is posted in the hopes it is useful, but without warranty. All copyrights are relinquished into the public domain unless otherwise stated. I am not an angel. I am capable of error, and err on a fairly regular basis. If I made a mistake, please let me know (such as by replying to this node).