I've removed the referal links...
Anyway.. You must relize that GreenZap is webcash, and not real cash, you can't get it in any real solid form.
Paypal is still the dominating online payment method and I am 95% sure its not going to change with GreenZap
Firefox: no, its not the end all solution, it has its own issues and in time it will be just as insecure as IE, when its hit Firefox 6, if it makes it that far. Oh, and AOL pays for it, incase you didn't know.
Microsoft & Windows: If you hate it so much, move to linux, or bsd, or anything else, stop complaning and move on.
Good starting places:
Gentoo Novell SUSE Fedora Core Apple