ehm yo first of all, u use a proxy to hide ur ip right ?
so, if u router your traffic through another pc in your house u still can get busted, i mean the ip of the routers stays the same or am i wrong ??
your pc ---------->proxy(second pc in our case)---------->router so tthe router ip stays the same and i dont know why that shoud get you anonymous throu they can bust the routers ip ??