I know this is silly but I had never thought about it before, until I noticed some interesting chatter on IRC. When Im testing proxies I use two types of testing. For harvesting I use the tests on Google functionality as I harvest most of my urls from google. For posting I tick the Ignore Google Tick Box as I want more proxies and Im not interested in whether they are burnt on Google. Im sure there is an in-depth explanation which would help people greatly. Has anyone got all the details on this in a tutorial which they would like to share?