Hi perk, I must say this one, I followed from the start, read the probable implementation for stats on another thread here, etc. but so far no luck for me, mind you I can be very thick! but I can't let go. So if you don't mind:

I have an ads and catalog server that is to distribute code to multiple ips with wordpress like or wp blog installs.
Ads are to "come and go" based on viewers, so are catalog descriptions (mosaic). wp is merely used to first create pages and handle comments etc.
From this point the content is cache in, out, renew.
I ajaxed the whole ads and catalog part but on the first upgrade it would be a mess to manage on a wide scale and without fooprints.
Your solution is obvious to insure portability and control, and very light because it ultimately does not exist!
So, What should "$theData" return, say, with json, for a typical 125x125 text add ?