Here is the list of banned sites: http://news.ycombinator.com/item?id=499044 http://news.ycombinator.com/item?id=499044 "The great majority are banned for spam

Here is the list of banned sites: http://news.ycombinator.com/item?id=499044 http://news.ycombinator.com/item?id=499044 "The great majority are banned for spamming and/or voting rings. Others (like url shortening services, squidoo, etc) are banned because they're often used by spammers. Others are banned for the reasons I listed in that recent essay: linkjacking, being offtopic, or characteristically being fluff."