moTi - 4:43 pm on Dec 8, 2010 (gmt 0)
i also think that this move is heavily faciliated by the fact, that goog still controls the ad market and m$ has really not much business to lose with this browser feature on their end.
it's actually not much different from the "adblock plus" approach. this is by far the most demanded add-on for firefox. no wonder why m$ is now promoting that stuff on their browser to recover market share.