I'm the original poster, and I was talking about ads, not metered queries. :)
[edit] and perhaps that was a poor choice of words. as a developer of high-volume low-latency exchange feeds, "query" has a bit of a different meaning to me.
Nope - the misinterpretation is my end - my bad. Re-reading your original I think we're on the same page. I think they need to reopen their API (if it isn't too late) and then just send ads as part of that package to clients and require them to display them.
[edit] and perhaps that was a poor choice of words. as a developer of high-volume low-latency exchange feeds, "query" has a bit of a different meaning to me.