If Google are running the OS, the chances of being able to stop adverts with an Adblock-plus-like extension are slim, and even running your own local proxy or editing the hosts file might be impossible!
35% is actually a much higher figure than I had in my head. About 12-18 months ago, a Microsoft representative was unable to tell us what percentage of users had Silverlight installed and web estimates seemed to put it at less than 5%. If the 35% figure is true, that's huge growth over that period, and more than enough to make it a serious consideration for shops considering rich internet applications.
I'd like to see some research to back that figure up, because if it's true, it's enough to change our product's technological road-map for the future. We're a Microsoft shop producing premium data products delivered over the web. Creating rich data applications is likely to be far easier in Silverlight (1.0 or 2.0, let alone 3.0) than, say, Ajax, Java or Flash. We couldn't say to our customers "install Silverlight - 1 in 20 people have already", but we can say "install Silverlight - just over a third of people have".
Just in case anyone decides to post the parent as informative, I'll point out Moonlight which is an implementation of Silverlight that runs on Linux. There is also Mac support in Firefox and Safari.
What's this, you say? An anti-Microsoft post on Slashdot with 100% opinion, 0% content or information, modded up to Informative? Say it ain't so!
Then block them. It's relatively simple, using the robots.txt file.
If you like, remove your RSS feeds and XML-based SEO site maps.
What's that? Your ad-hits have taken a massive decrease? Fancy that.
Marriage is the triumph of imagination over intelligence. Second marriage is the triumph of hope over experience.