The ad: Crammed full of memes and hard on the eyes, it's a little obnoxious! That's sort of the point, though, and it does a good job of summing of what's useful in Bing—its Decision Engine—for people who haven't really been following the story.
So, Mobile Bing! It's a typically stripped-down mobile search site, and behaves much like Google's basic mobile site. Sadly, some of Bing's most touted features are seemingly absent. Techcrunch notes that most curated results, like health and travel info, don't work, except for shopping recommendations, which can be a little over-aggressive. That said, in my short testing I found local searches, like weather and films, to be pretty good—even from the UK. [Neowin, BGR]