Oh ha, hi . I did one of your HITs a few months back, got an error message, haven't tried another one since, though I have seen them occasionally on /r/hwtf (I'm not always on a machine where I can do that sort of HIT; sometimes I'm at work, and they disappear pretty quick.) I will totally register and try that out. I do recall the one time I tried it, the hit tracking was still a little unreliable; hopefully it's gotten better since (I suppose I'll find out.)
Congrats on opening your own thing instead of relying on mturk - that seems like a big step!
edit: apparently you need to validate that your current machine supports the eye tracking, and I'm at work right now, too, so I guess I'll sign up when I get home, too.