Aaron Swartz has published a cool toy on the Google Weblog that lets you preview the ads you’d have published on your site if you signed up for AdSense. Unfortunately, mine totally suck, they’re all for weblogging tools. I find that odd considering how little time I spend going meta. Talking Points Memo gets all ads for charity, and Rebecca Blood gets political and current events ads. I’m disappointed … what does Google know that I don’t?