Well, it doesn't send the hashrate back to the server, since that'd use more bandwidth and add complications, but there is a section in the applet code that's commented out, which prints the hashrate on the current machine to the status bar of the browser. One machine I tested got about 200khps, another got around 800khps, and I think I might be able to bump it up to a couple mhps on some machines if I restructure the applet code a bit.