What sort of information leakage are we talking about here?
Basically on pretty much every site out there (give or take a few, I havent visited every site on the internet), your TRUE IP is being displayed. Doesnt matter if your using public proxies or private proxies, there's a bug that ZP is displaying your true IP address. Anton mentioned that iMacros couldnt perform 100 clicks in 100 different threads as 100 different users, so I mentioned that technically you'll be multi-threading as 1 user, not 100, because your true IP address is going to be shown the entire time regardless of if your using proxies, which sucks. This happens on all the major sites, hotmail, all the web 2.0 (Tumblr, Pinterest, Wordpress, Zimbio, etc etc), and this will get you in the stop forum spam database quicker than ever.