Carl Icahn, the activist investor who pushed for some of the big changes that have taken place at Yahoo, announced his resignation Friday from the company's board of directors.

Yahoo's announcement of a 10-year deal with Microsoft did not mention Google, but we all know what Yahoo CEO Carol Bartz was talking about in her blog post aimed at users.

Well, we can all sleep a little easier now that Microsoft and Yahoo have finally announced details of the search deal they have worked on for months (and that has kept some of us on the edge, as tidbits of the story had an unsavory habit of breaking on weekends). All of the details, and then some, can be found by following the links in this week's top entry. Otherwise, with the Black Hat conference under way, there was a load of security news, with DefCon to follow this weekend (no rest for the weary).

The successful launch of Microsoft's revamped search engine, Bing, was likely the event that tipped the scales in favor of Yahoo agreeing to a search deal, analysts said.