I do avoid threads that have gotten too long at times. I also DEFINITELY avoid threads like "Funny album covers" etc., but that's because I have dial up and don't feel like waiting four or five minutes for each page to load.
HOWEVER, avoiding the funny rat thread is avoiding one of the most important threads on this board in my opinion. I'm WAAAAAY behind on reading it; I've only read up to page 21 as I've tried to rein in my CD buying spree. However, when this buying slow down is over, I'll be right back there looking for more ideas. I keep a post-it note on my computer with the number of the last funny rat page I've read so I don't get confused, and keep a list of titles to check out. I've been exposed to jazz I would have never known existed if it hadn't been for this thread, and while I can't say I've enjoyed it all, I can say that I've enjoyed enough of it that I'll keep going back.