joel spolsky on splogs

Joel Spolsky has a great post on problems with AdSense, click fraud, and splogs. Especially splogs. I love this passage:

First, they create a lot of fake blogs. There are slimy companies that make easy to use software to do this for you. They scrape bits and pieces of legitimate blogs and repost them, as if they were just another link blog. It is very hard to tell the difference between a fake blog and a real blog until you read it for a while and realize there's no human brain behind it, like one of those Jack Format radio stations that fired all their DJs, or maybe FEMA.