Variations of JSON results from Search Engine APIs

I'm retrieving the search engine count estimates for queries from Bing, Google and Yahoo, using the APIs for each and getting back JSON formatted results. You'd think its easy, but think again. The problem is that each search engine has a different format with different interpretations of the JSON spec. For example, the total number of hits (search engine count estimate) for a query is called "Total" by Bing, "estimatedResultCount" by Google and "deephits" by Yahoo. It gets worse, Bing returns a integer value (correct) while Yahoo and Google return a string containing an integer (not so correct). Hopefully in the future there will be a single standard format for interacting with a search engine, however its a very very long way off.