Missed this earlier, but Steve Rubel has an interesting post from a couple weeks back on how might spawn a new advertising market. At the least, he offers some tips on how marketers should avoid what some people call spag, for tagging spam. Others, understandably, aren't so sure marketers will restrain themselves. Well, who can blame them? Let's just hope tagging doesn't get buried in useless ads before most people have even heard of it.
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