I hate pointless posts with ever fiber in my body.

It's just annoying to have an educational conversation, then all of a sudden someone posts something about what happened in school, what happened in another topic, how someone hates them, etc. It's also really bothersome to have people repeat what someone else already said because they want to sound smart. It happens mostly in the questions page...usually, it's something like this.
Person 1: Oh, you have to click "edit my profile" and there will be a url box for an avatar.
Person 2: yea u c that button that lets u edit??? clik it & u can put the url in ther

:D:D
Ugh, it really does annoy me. If someone already told someone how to do something, then another person shouldn't act all smart-like and repost
exactly what they said. Once the question is answered, no one else should post. It doesn't help their reputation, and it certainly doesn't help the person who posted the question. Spam is another issue. Just look at
this.
It's a real shame that I somehow am not able to delete that message. What was the point of that person posting it? I really don't see it.
Holy...
Seriously, I think ALL mods should be able to delete useless posts on the site. That would clear up a LOT of spammage