All those links have public stats like Webalizer or Awstats and got even few .gov and .edu there. You just have to get a good proxy list and let the prstorm doing his job.
I even had my IP banned by google for 2 hours, but this was my first link harvest
hxxp://rapidshare.c0m/files/112332341/washed-webstats-links.txt.html