Lately I've been getting a lot of ads for things like elevator servicing, and industrial fan maintenance. Not only are these ads not relevant at all, but I can't imagine how anyone who owns an elevator would decide to get it serviced by clicking on yahoo ads. Yahoo seriously needs to get their shit together. They've been around for 2 years now and their program has only gotten worse.
Yep, those are some crappy ads. Its such a niche area. Exactly how many people own an elevator and second how many don't have the company who installed it responsible for repairs. IMO its of ad space.
Yeah this past week I've had to pull my biggest niche site from Yahoo because eCPM had plummeted. It was below what I was getting for the same site through Adsense with Geotargeting. I've still got a couple of sites with YPN but until either the ad targeting improves or the value of the few clicks I get gets better I'm on Adsense.