According to Joseph Weisenthal of the Washington Post, Google and Yahoo have agreed to suspend their multi-million-dollar search advertising arrangement for at least three months, while the Justice Department's antitrust division investigates the deal. In addition, Weisenthal mulls over an analyst conference call, in which attorney Glenn Manishin speculates on the chances that the feds will nix the deal. It all depends, Manishin says, on what constitutes the advertising market. If Justice Department officials define it as search ads, the Google-Yahoo deal will be dead in the water. If it's all online advertising, or all advertising period, the deal has a much better chance or sailing through. In any case, Weisenthal suggests, Google and Yahoo decided to wait for the feds to weigh in, rather than bore ahead and force Justice to seek a court injunction suspending the deal while the investigation proceeds.