Why do Web Analytics Applications Never Use JSONP

I'm thinking of building an application for myself that is similar to Google Analytics, Getclicky, etc.

I've noticed that all of the开发者_运维百科se websites use Image beacons to send data to the servers.

Aside from the size overhead, is there any reason to not use JSONP using jQuery?

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JSONP is great when you want a response with meaningful data. In the case of analytics you dont care about the result. The easiest fastest and simplest way to send a GET request to a remote server is by requesting an image. And if you don't care what the response is, then anything else is needless complexity.