Open Proxy list / DR discussion list.

Hey guys Either I'm clean out of google-foo, or there's little or nothing out there to be found, to help me with my current two projects. - Is anyone maintaing a real-time list of known open web-proxies? I run a small network hosting several forum sites, and I want to build something I can query regularly (say, hourly or daily) that will let me string something together in perl to build access-lists to throttle or block them altogether at our border. - Is there a good, practical discussion list for disaster recovery practicioners to discuss techniques, theory, news? Hoping someone can help, I remain obliged to you all, BR AS