Well, what I'm really looking for is the inverse of the "log_clickthrough" call.
When I record the clickthrough, I'm passing in the document_type (it's part of the URL) and the id - which is the external_id (a reference to my data that I'm familiar with).
So, I'd basically like to have a call that is "get_clickthroughs", with an optional date-range as a parameter. It would either return the list of objects of type "document-type" (like what you see when you do a search), or just a list of the top id values that were clicked-through (like "top queries", but external-ids, instead of search terms).
So, basically, I'm asking for "trending clicked on".