It does seem an odd thing to get annoyed about.
I get annoyed by these forum things, I wonder if anyone else does?:
People saying "see page 3" when the thread is only one page long for some of us. Not everyone uses the default 10 posts per page.
People saying "post" when they mean "thread" and vice versa
Peoples not quoting when replying to a post other than the one directly before theirs. It makes it impossible to understand wtf they're on about sometimes.
People asking a thread to be locked because it's boring.
People replying to a thread and just saying "subscribed" or
and finally, JamesMark's ongoing quest to post the world's oldest joke.
Yes I know I'm a miserable old git, thank you.