Why do people try to discount something by...

[gravy]

Yea thats very annoying.  For an extreme example visit www.pwned.nl

[Kodemaster]

LOL...Usually I see it the other way around...someone disagrees with what someone said, so they pick up on any misspelling by the other party and say something to the effect of "well, at least I can spell properly"...

[Risu no Kairu]

...misspelling other words?

That bothers me. They don't agree with something so they try to defend what they like by doing something like "Well, I like A, so it is not "teh 57up1d!!!11!1" I win the argument because of  how I typed "stupid.""