I haven't paid a nickel for MY COPY nor have I ever seen a nag screen or a Registration form. It's FREE if you have a PPC Dual G5 Macintosh: you JUST Download it and It works! I don't know WHO you MacIntel folks are paying $15 to because I can find NO Way to pay anyone for this. And It's never crashed on me. I dumped Snapz Pro because they want $69 for the same functions Copernicus has for Free! My thanks to the Developer: and I'd DONATE $10 to them If I could find a way to ... I've gotten $100 worth of Use from this but can only afford $10 in cash and $90 worth of Thanks ... This is one of the best presents Software Santa has ever posted for the Macintosh!