Hey there,
I have tested various Level 1 proxies but often get this:
Proxy Server Refused Connection
The connection was refused when attempting to contact the proxy server you have configured. Please check your proxy settings and try again.
The browser is configured to use a proxy server, but the proxy refused a connection.
* Is the browser's proxy configuration correct? Check the settings and try again.
* Does the proxy service allow connections from this network?
* Still having trouble? Consult your network administrator or Internet provider for assistance.
Do you just discard that particular proxy and move on?
Regards
Greg