I also did a quick test using only free tools. I used gscraper and scraped about 30,000 profiles. After I deleted the duplicates, I had about 12,000 profiles. Then I used xenu linksleuth and scraped about 200,000 urls. Out of those, there were about 6,000 not found urls. I then uploaded those back into gscraper and checked the pr. I was left with only 140 urls with a pr of 1 or higher. I made a small php script to check the urls, and only 3 were avail to register so far. 1 pr 2, and 2 pr 1. I'm going to try gogetta's script that he posted above.
Here's the links for those if you need them:
Code:
http://www.gscraper.com/
http://home.snafu.de/tilman/xenulink.html
Jenny