Wlauzon - 6:22 pm on Nov 28, 2010 (gmt 0)
We run a few campaigns on MS ads, about 1/15th of what we spend on Google ads.
A few have done OK, but the biggest problem seems to be that the search volume % is much less for a lot of niche keywords. Sort of like maybe Bing is used more by the social networkers, while Google is used by the somewhat more tech savvy people? ... I dunno.