On the Ideas page in the Mozilla Connect Community I tried to check whether my suggestion had already been posted. I searched on two words, Back Button. Since most of the hits were for one or the other word or for both but not together, I then used the normal search convention of entering the phrase in quotes, "Back Button". This seemed to have no effect on the hits obtained. Mozilla, if you want us to avoid suggesting old ideas, please improve your search facility so we can search on a phrase using "".