According to reports Google has admitted to keeping every search query ever submitted. (InCite, Vol 28, Issue 7, p25) Which may make you stop and consider what your employer would say if they ever had access to the records and found out how much time you had wasted since starting work with them. How could the powers that be manipulate the data to make you look "bad"? Don't consider the possibility of frame ups and cover ups - well how many people were sent to prison on flimsier evidence than that? How many had convictions overturned as a result of the same?

A case of think before you search, and certainly before you do so in work time.