P2P TV streaming is the equivalent of the original Napster. It offers illegal access to programming that would usually require subscription/ pay per view.
Online operators such as pplive, ppstream, tvkoo, qqlive, feidian and sopcast are generally based in Asia and frequently change their names and websites to avoid detection (similar to the Asian market-makers).
We wouldn't use such services ourselves as we have concerns about security issues but, if you want to wind up Murdoch, try it out for Premiership football matches. For legal reasons, we would suggest that you use anonymouse.org (or similar) to avoid detection.
Sky only have themselves to blame. Monopolistic overcharging for moderate content will always lead to grey market operators by-passing the system.