Well the serial stardock gave me for online play doesn't work, but I don't really care, Sins is more of a strategy game than the kind of RTS you would enjoy playing online. On the other hand, the game doesn't require me to have the CD in the drive, big plus. I welcome this kind of move from an industry that is ripe with really poor conditions for buying games through downloads. Instead of just getting a contract between you and the company that says you payed for the game, they make all kinds of restrictions on how many computers you can use it on, and how many times you can install and activate it.
Battling online piracy requires that it is easier, not a lot harder, to get a game the legit way.