Another step towards bookmarkable advertising: this Adobe banner came with an embed code, like your friendly neighborhood YouTube video. It's a somewhat lousy execution of an idea based on an interesting insight -- there's a small percentage of people that would not only click on your ad, but would also show it to other people. Bummer, though: the ad links to a pdf file that pops an error. Plus, I wish this "embedebleness" came with some sort of revenue share.
The banner links directly to a pdf that doesn't display on older versions of Acrobat Reader.