Correct me if I'm wrong but aren't block erupter usb sticks completely pointless considering the fact that diff is rising at an alarming rate???

I want to know why people even bother paying over 2BTC for a device that most likely won't meet ROI, EVER!

Current difficulty at 19Million these sticks make about $27 a MONTH.  It would take 7 - 8 MONTHS to brake even and that is if diff remains at 19Million, which it won't.

For that matter, erupter blades will also have hard time making ROI.

So best thing to do for now is to get into the DIY avalon stuff.