Around 100 suggestions an hour are coming through from readers suggesting subjects to search for in the cables database. We've set up a small team to go through them and so far the results look promising. Several people suggested searching for information on Madeleine McCann, the British girl who went missing in Portugal in 2007, for example. She is indeed mentioned in at least two cables from the US embassy in Lisbon. No clues to her fate, unfortunately, but some interesting observations on the involvement of British police, which we'll relay once we've checked them out. Similarly, lots of interest in the murder of Russian journalist Anna Politkovskaya, who was killed in 2006 and is mentioned in around 70 cables. Other popular requests for more infomation include the private security firm Blackwater (mentioned 159 times in the cables) and several themes that have already been trawled over by Guardian journalists such as Bosnian war crimes, but which may be worth returning to on the basis of more detailed search suggestions. Please keep the ideas coming by sending tweets to @gdncables (preferably with details of dates and locations) and we'll try to respond as quickly as possible and keep you updated on the 'you ask, we search' exercise via this blog.