jomaxx - 5:27 pm on Jun 1, 2007 (gmt 0)

I'd have to agree it was intentional. Possibly because it was on their list as leading to a potential privacy outcry someday.

Or possibly because they're afraid it leads to the overoptimization of MFAs.

Or it's possible some arbitrage sites were tracking AdSense clicks as "conversions", and Google didn't like the implications of that.