Yeah Sony made a good move with PS+ being required to play multiplayer, it's a great service and the minute you buy it you get Drive Club meaning it's already paid for itself. Hopefully all the money will go towards things that will improve PSN in general.
To all the people saying they won't be able to afford it, I can barely afford simple things in live but gaming in my main past time. It's all I really have if I can afford PS+ I'm pretty damn sure you can. :p