For the record of it, I actually already do something like that. I keep a rather large Database of all the Proxies which have been active over the last five months or so. After dupes have been removed the entire Database only has 45,987 IP's in it at this point. I have been upto around 60,000 at one point.
This site constantly scans the list, and keeps records of which are active at any point in time. As a result, at this particular poin whatever this site gives in its Proxy List is actually the extent of what is active out there give or take twelve hours.
At this point I am more interested in working out a way I can setup a public Socks5 Proxy (no mail, no IRC, no P2P), which will pay for itself. $100/month is roughly what it would take, but hey, its my money I would be spending, not someone elses
