If Google or any other search engine wanted to know what sites they should not rank, they should just start up an anonymous web directory and wait for the spammers. The good sites never submit to web directory’s. They then could lower the rank of each website that submits to the web directory!
I have seen the cess pool of crap that gets submitted to web directories and they really are that bad. The spammers never read the guidelines. Never submit to the right category. Always have non-guideline complaint titles and descriptions of their sites. Why do they bother? They want a free link from the website, so don’t you think the best they can do is actually get the guidelines right? Why make it hard for the directory owner to list their sites! Even this owner of a forum directory complains that he gets 20 to 100 submissions a day; but only 1 or so a week is actually a forum! Just shows you how stupid spammers are that they submit to the wrong directory. There are plenty of directory lists available. I guess they just go to them and blindly submit away.