Why am I so resistant to taking the Bing Challenge? Regardless, as a marketer, it's foolish to ignore 20% of the market (more or less, including Yahoo). And Bing's ads have just taken a step up by adding "sitelinks" -- additional direct links to important pages. Seems to me I've seen them elsewhere...but they're welcome, nonetheless!
For more: http://community.bingads.microsoft.com/ads/en/bingads/b/blog/archive/2012/10/09/new-feature-introducing-sitelink-extensions-in-bing-ads-ppc-sem-advertising.aspx