There are three main uses for Tor:

• to browse the Internet using different IPs
• to browse .onion websites
• to host your own hidden services accessible only through Tor.

Do not expect much from using proxies to anonymize your HTTP or HTTPS traffic. Using Java and Flash/ActionScript it is possible to snoop your MAC address or your IP address. Tor should only be combined with a browser that has Java, Javascript, Flash, and others disabled.

Some good proxy testers out there that will be able to bypass Tor's and reveal browser information and network location:

• ip-check.info - uses Java and Flash/ActionScript.
• whoer.net - uses only Java so that blocking the applet access is sufficient to avoid detection.

Some identifiable strings sent by the browser can be blocked depending on the proxy used to relay to Tor. The X-Forwarded-For proxy variable, the referrer and the user-agent string can be spoofed or blocked and privoxy allows you to do this.

After making the changes to privoxy, you could should privoxy to forward all requests through Tor:

### Testing
## http://www.saunalahti.fi/parazite/cgi-bin/env.pl
forward-socks4a / 127.0.0.1:9050 .
### Testing

and then access http://www.saunalahti.fi/parazite/cgi-bin/env.pl to figure out what leaks should be plugged - your IP, at the very least, should not show up.

For a setup that will allow you to browse both .onion and .i2p domains, see the proxy chaining page.