OK, so the big G introduced its 'match content' beta today. From what I can tell it's essentially a free ad unit you can use to advertise your own content. It links to similar content from your site and doesn't count toward your ad-per-page limit.
Trouble is, they don't seem to work. I've been trialling these matched content units on several pages for three hours or so, and none of them have actually shown any content. I just get big white holes in my site.
Has anyone tested and had any luck with them? I'd like to use them because they sound ideal for my site, but they need to fill, dammit.
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