It is an excellent, well-contributed-to service with a very big content base. But you're right, they do have some problems. I look at their 336×280 ads and wonder if that's the extent of their monetization aside from a grasp at eBay. I've never clicked one of their crappy “help th3 skat0r” ads or found anything even remotely tailored to my interests. It's a shame somehow AdSense isn't making better sense of my music list and serving ads that would help imeem out.