based on my understanding of how your pool delays stats i am not quite figuring out how they can do this.
are they assuming if a block is solved and they cannot figure out who did it via screen scraping or an api.. it
must be deepbit?
or do you possibly know something i do not?
There are some possible options, but usually they don't give 100% true resuts.
The fact that they don't show it for everyone is a bit suspicious, by the way.
All pool hashrate jumps and dips are visible to me, so if poolhopping will cause a considerable loss for my users, I'll take appropriate actions.