I have a tool that scrapes specific information from Google. My server was already banned/blocked by them so we've rewritten the tool to be able to use proxies. What is the best way to do this out getting blocked again? What we do is scrap the information and then cache it. We rescrap/update the information every week or so. Should I spend money on something like squidproxy or use the $5 public proxy offerred from thebigproxylist.com? Your thoughts?