The Daily Summit blog referenced below was started by David Steven and friends just to cover the Johannesburg summit. Interestingly, it's funded like science (including travel), according to an article covering the blog (very meta): "Steven, who doesn't think of himself as a journalist, says he approached the British Science Council in early August to pitch the idea and it agreed to sponsor the site and his travel expenses. A week later, he says, the site was up and running."

It's an excellent site. Too bad I only found it today. I love this Q&A from the FAQ:

Do you know what you’re doing?

No. But we think we can find out!