Originally Posted by 420MuNkEy
Stumbleupon is like automated reddit without having to see the annoying comments.
Sometimes I like the comments, provided it's easy enough to skip past the inane and irrelevant ones and find the few that actually contribute something to discussion. The slashdot moderation system works pretty well (you can set it to only show comments with a certain ranking or higher); it isn't perfect, and filters out some good while voting up some bad, but overall I think it trends towards improvement.
That aside though, I never use reddit, unless someone links to it.