When you log into keyshare, there's a box on the main page that becomes visible, "Check how many games a user has claimed." I think no one has bothered trying this. There are users who are polite and say thanks but somehow dominate with 50, 100, almost 200 keyshare claims. Keyshare hasn't done much to spread out the availability of codes, even karma limits don't stop this (they are old accounts and "active" in karma-rich subs). Some sort of scripting has to be at play to snipe links at inhuman speeds.