Well, that was less than a month, between rumor, and confirmation. Technorati, the blog search engine, has indeed acquired Personal Bee, a news aggregator. This could be a sign that Dave Sifry's startup, which has struggled to define a strategy, will develop news sites around topics such as technology and entertainment. Or, given that the Mobius-backed company has launched a search for a new chief executive, and a new purpose, it could mean nothing much at all.