I haven't been looking at this forum for a long time, but most of the "this topic has been discussed before"'s, I haven't seen, and no way in hell am I just going to go and read old posts from two months ago just so I don't get flamed. I just think that some people are dicks on this thing.
I haven't been posting here for very long either, but I did spend alot of time reading before I began posting. Its simple really. I took the time to educate myself about this forum, like I do with any forum, to get a feel for what is being discussed, the types of posts made here, and how people respond to different things. And it has nothing to do with being flamed. I simply like to know what I'm talking about before opening my mouth.
But you are right, some people here can be dicks. Educate yourself and they will go away.

Edit: Don't be discouraged by flames. Come back strong and change their opinion of you. Welcome to the forums.