guys, could you please educate me on using proxies? Let's say I get a list of fresh proxies. 1) How do I use free tools to check if they are alive? What's the best one and how to use it? 2) If let's say I create profile on forum or social network and make a comment, and then proxy becomes dead / expires, what IP address users will see corresponding to my profile / comment? Would my real IP get exposed?