It's a nice phrase, and it does a good job of conveying the key benefits compactly. I think it's not an either-or: as far as I can see they're using it as a headline, not as a replacement for the "open source" phrase. They close the paragraph with the "open source" phrase.

Also, they're talking about more than just open source - they're describing a fully open process. Do we have a name for that yet?

Good point, Gervase. I really like the way Open Office advertise the "openess". However, it's too geeky for general public audience. Why not to take the other approach, using the marketspeek, emphasizing COLLABORATION or COOPERATION, transparent development processes ensuring flawless and secure products.

For me, 'open' or 'free' or 'honest' does not cut it. I'm only interested in community developed software. Community developed software is naturally open, typically honest, and usually free. But it's also more. Community software engages developers and users in a common goal to make the Web better, not just cheaper.

jjb