I see the figure of 17k as a particularly effective way of rebutting many of the so-called, inflated "lost revenue" figures we read/ hear.
Nothing quite says "you were never getting the money, anyway" better than offering them the chance to pay 2c, and having them pay the absolute minimum.
If you read this report and have trouble / get angry at the 17k, you're missed the point. The point is, some will NEVER pay for it. But hey, many will. They're the ones we're selling to. They're the ones suffering when we remove features / lockdown / DRM our software. I suppose it's easier to be optimistic when you're made 100k in a few days and the only opportunity cost was the realisation that a pirate is infact, a pirate though.
Personally, I wasn't interested in this game (played the demo), but I am interested in donating $2 to see that that the experience of using this model is furthered, so I'll definitely buy it, simply to show support. Much to the contradiction of popular gaming industry opinion, they haven't lost money by me not paying full price, they've gained $2 they would have never seen, otherwise.
If you scroll down to the bottom of this page and reload, you will just how quickly sales are occurring (and this represents only a fraction who take the survey, I believe).
http://www.surveymonkey.com/sr.aspx?sm=MZpIFVRQn99e_2fJukiNVWR9Rm3Xg1MSQ85QQk09BNH3s_3d