I'm an American who can understand Japanese decently. When searching for Japanese stuff online, I'd come up with a lot of 2ch links and be pretty confused by them at first.
Eventually, I got the basic idea of the site by lurking, around then world2ch popped up where I could get to post without worrying about my poor Japanese. I really liked the site and was interested in the idea of anonymous posting.
As world2ch died, someone mentioned "4chan", so I went to check that out. But I still liked a text BBS better. So when I heard about 4-ch, of course I started to post here!