One of the most unique and enjoyable features in Bing is the custom homepage image we have each day. The photos are usually beautiful and have hotspots that link to interesting web info. (You can check out some of the previous images on the Bing Image Archive.)
Recently, my team in Beijing and Tokyo started doing images and hotspots specific to the Chinese and Japanese markets. I'm especially proud of image we posted today. The school in this photo is in Sichuan province (home of spicy food); it was destroyed in the horrible earthquake last year and rebuilt with the help of MSN China's Rainbow Action effort. Over the next few days we'll use the Bing home page and a series of new photos to drive more attention the survivors of the Sichuan earthquake and encourage people to help them recover. (On a technical note, this is the first time we've commissioned a photo for the Bing homepage; we normally use stock photos.)
Anyway, I encourage you to check it out at cn.bing.com and to donate to this effort on the Rainbow Action site (available in English and donations can be made through PayPal.) I'm often proud of the work we do technically, but it makes me even more happy when I can be proud of what Microsoft does for the community.
[Update: 2009-09-01 Apparently the MSN/PayPal collections for this phase are closed for now. It's still worth donating via other means.]
[Update: 2009-09-06 Shrunk the image down to fit on more screens.]