Tina Brown is expected to address her staff at The Daily Beast this morning about its merger with Newsweek, which was confirmed late Thursday.... ...The merger follows a protracted search by Harman for a new editor-in-chief of Newsweek, which he officially purchased in early October for $1, while agreeing to take on the magazine's mountain of debt.... ...Under the terms of the deal, Newsweek and The Daily Beast will become a 50-50 joint venture called The Newsweek Daily Beast Company, owned equally by Harman and IAC. The nuances of how the editorial operation will function are still unclear, but Brown...