You can still do this even if you aren't willing to trust me.

Just grab some old laptop that you never use any more, delete any passwords or other confidential files, and use it only for my software. Or, just purchase a cheap laptop and use that. Keep the email as proof that the IDEAFARM.COM servers emailed the software to you. If it ever does anything evil, consult with an attorney about suing my ass in a class action; you would both be able to get rich.