This is the code for a simple php pseudo proxy. If you are blocked by a firewall and google cache isn’t working for some reason. You can use a url with this php file in it:
Then you can go to where the url is hosted and try something like this:
index.php?url=http%3A%2F%2Fwww.last.fm%2Fuser%2Fdanfolkes%2Fcharts%3Frangetype%3D6month%26subtype%3Dartists