Who knows how much it would hurt Google's earnings. These aren't people who are out buying new computers, who says they're clicking on ads?

I'm sure that some are clicking, but I don't know that IE6 users are necessarily as lucrative to Google as users of other browsers.

I would bet you every last dollar I own that IE 6 users are, on average, the most lucrative users out there. You know how people here say "who looks at ads?" You can't click ads you don't see. And remember, standard user studies say that a large segment of Google users think the ads on SERPs are actually search results.

In short, IE 6 users are dumber than users of other browsers and Google's revenue is juiced by dumb users who click their ads.

I know that IE users are more likely to click on ads, but I haven't heard much about which versions are more likely to click through. Most of the visitors I get to my sites via adwords are on IE 7 and 8; but that's just anecdotal evidence.

So, if you've got something that says IE 6 users are more likely to click on advertisements than any other version of IE, I'd love to see it - maybe we should still be paying attention to them.