It is the yahoo search engine.  It doesn't send userinformation and running in the exception handling, and will be logged.  You can prevent it by using a robot.txt file.

No there isn't about the log is saved by the error handler.  It needs then a solution on code.  Problem is on this general on testing this, about testingsystems are not live systems.  And my testing systems didn't have big size of forum posts. 

I like to look if we can found a solution (perhaps it is allready done) for the next version.  The Forums developing team is hard worked to come to a release.