I guess my genereal perception of sites that use "black hat"
SEO is that they are worthless. I almost never see any useful content. They tend to be IMHO not much better than spyware. They force sites with good content but poor
SEO down in the rankings with out providing any benefit to the end user. They tend (not all but most) to be sites with lots of adsense and affiliate links but nothing of any real substance. I've read plenty about black hat stuff and I've never found any real reason to do it. Sure maybe you can make some cash for awhile but in the end the frustrated enviornment that creates will turn against it. But hey no one really listens to me anyway :D
NV