Hi!
Would it help if I add the following header to every large batch of queries?
I think having a distinct User-Agent header (maybe with URL linking to the rest of the info) would be enough. This is recorded by the request log and can be used later in processing.
In general, every time you create a bot which does large number of processing it is a good practice to send distinct User-Agent header so people on the other side would know what's going on.