This is frightning, google giving law enforcement a list of users who did a particular keyword search.

I am glad it helped solve the murder case but it also implies that my search history when using google services will always be stored and can be shared without my permission. Given that its almost impossible to not use google unless you want to be frustrated while trying to do basic stuff like email, searches etc. This basically mean every bit of data generated my anyone is permanently stored and its just about time until it will be searched for any useful stuff in case there is a situation like this again which there always will be.