Yep Mr. Bill I hope so too..
But you must know this:
Centurian: You get a one time traffic of 'XXX' visitors (like tech-faq)
Proxy.org: You get DAILY traffic from 14-20 uniques per day...
Which is a lot more in one year
So that's the big difference why most people prefer proxy.org
Though I submit my proxies to all of the proxy lists