That's the problem that thousands of proxy list owners make btw...
Searching for owners to get more proxies in the list is something good, but searching for users to get more clicks to the proxies will make your proxy list even better...
I don't like the 'thousands of proxies' too... I mean, it's better to have just a couple hundred but active working ones ;)
Like Proxy.org etc... it's normal they send out 14 hits per day to all of their 'regular proxies' as 70% doesn't work.
At the moment I'm pretty happy about ProxLists, if I check one of the other listing sites WebEvader I'm almost with my number 1 at their number 1, but that's pretty normal as they list more proxies (I never checked if they all work though)
I just hope proxyrotator will grow in pagerank as the number of submissions increase.