I think someone forgot to turn off his autoclick macro.
Make "Hits" statistics visible only to users who are logged in (i.e proxy owners). I believe that will distribute valid hits more evenly since visitors can be drawn to proxies with higher hits which can be manipulated. Removing the incentive to cheat can also save server resources from serving unproductive clicks.
Yeah that does kinda stand out from the rest. Is that just hits from one day ? :D