To get back into the search game, Yahoo has opened up the source code to its search algorithm.  It is a clear sign that Yahoo is struggling to keep up with Google, and it is a last ditch effort by Yahoo Search to stay relevant.  You will remember that when Netscape collapsed, it moved the same direction, so that it could leverage external developer’s knowledge to try and compete.  Yahoo is in the same place, it is looking for a Hell-Mary pass to become relevant again.