After Flickr co-founders Stewart Butterfield and Caterina Fake is leaving yahoo, Joshua Schacter, the founder of Delicious is confirmed leaving Yahoo too. Flickr and Delicious are web 2.0 website acquired by Yahoo in these few years. I like these two websites, and I think these two websites are two of the few potential web services which play an important part in Yahoo's future. Yahoo even close down its own online photo service and replace with Flickr.
After Yahoo rejected Microsoft bid and turn to Google, Yahoo senior executives were reported leaving one after another. Qi Lu (executive vice president of engineering for Search and Advertising), Vish Makhijani (senior vice president of search), Brad Garlinghouse (senior vice president of Communications & Communities), and more... TechCrunch run a long list of Yahoo executives who leave yahoo since January 2008, and the list keep updating very frequently.
Jerry Yang was pressured from angry share holder like Carl Icahn, criticized by writer like Joe Nocera, now facing executive exodus widely reported by news and in many blog posts, is really a hard time for Yahoo and Jerry Yang.