When I got mine, I joined it to BTC Guild and it paid itself off in 22 days and has been profitable since even factoring in electricity.
You mean you recovered the amount of bitcoins you used or that you would have gotten had you done a purchase with the fiat you used to buy it ? In 22 days?
That's correct, I paid in fiat (paypal to KNC in November) and mined enough in BTC in December, that once sold, paid me back in fiat in 22 days. Some people on the KNC forums said they recouped in 19 days or less, but I'm guessing their pool was better, had other mining equipment, or sold when BTC was over $1k.
-Chris