Multirequest. Instead of post x search request, you can put all into one call.Can also be used with POST instead of GET requests.

JSON

&request={JSON}

http://meta.et4.de/rest.ashx/search/ET2014A.xml/?experience=demo-dahoam&type=All&limit=10&request={"experience":"demo_dahoam", "parameters":[{"type": "POI", "limit": 2},
{"type": "Hotel", "limit": 2}]}