I remember seeing a recommendation to use an auto paste (Meguiar's I think) to remove scratches. You might do a search -- I think it was in the General forums a month or so ago. I thought it was a strange recommendation at first but several people tried and verified it including I think at least one of the mods.
Edit: I did a search on the main forum and didn't find the recent post but there are a couple of older ones. The specific product is called PlastX. http://www.meguiarsdirect.com/produc...?T1=MEG+G12310
2nd Edit: Seached again and wasn't the General forum but the Storm forum. And the mod said he may try it, not that he did. Here is one of the strings: Here is tip for screen care on your BB Storm