I've seen some annoying people who keep finding your mistakes on your post and make your look stupid. Grammar nazis do not annoy me, because everyone know they are grammar nazis.
For example (these were not biased and extreme examples):

What drives me crazy are people who can't spell or make something even remotely readable. I can understand a small spelling mistake or two but when people are putting " ya so ii plaed tat one gaem o teh plaestshin nd itws ooober grete" that really drives me nuts. Which brings to to another thing that annoys me, run on sentences. It's really annoying how people put a paragraph of text with only one punctuation mark (if any). It is simply amazing how people assume since they are on the internet they can throw all grammar out the window. If you were writing something for like an English essay or something you wouldn't write like that.

Another thing that annoys me is when people don't look at the dates of the previous posts. For example, I was on a forum for DS homebrew and I noticed a topic about the Games n' Music. The post was made around the time it was first released and people were asking about when a DLDI patch would be released. The topic lasted a few weeks then died off. Then some wise guy decided to bump this more one year old topic and reply "they did make a DLDI it works just fine you can find it on google" (or something along those lines).

"omg u guiz i fownd sumtign grat on utoob jus klic dis leenk hiir"

Like that? Don't mind them, they're just twelve.

so i herd yuo leik buizels!
lol

I hate the one-year bumping of topics like that. Ones like the "What 6 Pokémon would you have?" are okay to be bumped for new answers, but some other things just don't need it.

Like me bumping a three year old topic and saying it's old. Tsk tsk, naughty me.

I wonder who yoshi is talk about i caz splls the goodest


agree bumping is annoying