Also worth mentioning, if you're a regular subscriber of qore, it comes with the Plus package too. Considering qore offers lots of free content as well, and depending how Sony support the feature (Plus) every months, it can end up being a very good deal.
The thing is, compared to XBox Live, PSN is still offering free online gaming, and all the features that we already use and love. But for those who spend a lot on PSN on a regular basis, I think Plus will end up being a smart thing for them. Add to that the fact that the service is bound to improve over time and offer more and more features, and you'll have a very impressive value.