Scott Moore, the head of Yahoo Media Group, is leaving the company , reports BoomTown's Kara Swisher. A bad sign for the company: Moore ran some of Yahoo's most successful operations, including its news, finance, and sports websites. Why is Moore leaving now, having survived most of Yahoo's annus horribilis with his charm unruffled? The first conclusion I'll jump to: Talks with Time Warner to sell AOL to Yahoo are advancing, and Moore does not like his position in the merged entity. Update: Swisher writes: "Dead wrong guess as usual. Talks are slower than ever. He had the top job over Bill Wilson." Well, why didn't you say so in the first place, Kara?