Even though I installed the Firefox proxy plug in and the status box of the plug-in reads "using ABC proxy", when I use any of the self checking IP tools, they still show my IP address, not a proxy address. Can anyone help me...till now I actually thought everything I was doing for 2 days was via proxy and now I'm not so sure. Thanks
You should read about the different levels of anonymity that proxies can provide: transparent, anonymous, and highly anonymous (a.k.a. elite). You were most likely using a transparent proxy which passes along all your information.