I recommend them. Here's a quote I particularly liked:
From various sources we can see that despite some quality games coming out from smaller developers, like RooGoo and Shred Nebula, they're not selling. They can't get their name out there, and nobody is taking the time to give these games a go.Of all the stuff Sony's screwed up in the past couple of years, the PS Blog is one of their triumphs. I don't read it a lot, but they do a decent job of keeping true exclusive announcements for themselves. That increases visibility and readership tremendously, I'd imagine.
Go and have a look at the US PlayStation blog - they have done a fantastic job allowing smaller developers, like the people behind high Velocity Bowling, PAIN, SuperSonic Automatic Rocket Powered Battle Cars and NovaStrike to speak directly to the community and give them a chance to convince the people. Interviews with Major Nelson are nice, but that's not enough.
Anyway, the articles are a decent read.
Disclosure: I have written pro bono for GamerBytes and the parent company (Think Services) also owns Gamasutra, for whom I write monthly.