You may have heard of Science 2.0. It's the latest "revolution" in science. You can read a nice summary from the Howard Hughes Medical Institute [Science 2.0 You Say You Want a Revolution?].
Personally, I think blogging is going the become part of the culture in the same way that newsgroups did in the past except that more people are going to read the blogs. I don't think it's going to be a revolution. I don't think the majority of scientists and students are going to become regular readers of blogs. The blogosphere culture is not for everyone. Many of my colleagues are completely turned off. Blogging is going to be just one more way of communicating science and sharing ideas.
I'm skeptical of OpenWetWare (OWW) and other software that allows you to put all your notes and protocols on the web. Right now, most labs don't make shared electronic versions of protocols and notes even though we've been able to do that for 25 years. I don't see why that's going to change. My notebooks have lots of comments that I've scribbled in the margins (F**k - forgot to add magnesium!). I don't know why I'd want to share that with everyone on the planet.
I've done lots of "secret" experiments in my lifetime just to check out some crazy idea. So have the graduate students and post-docs in my lab. Does this sort of thing never go on in the labs that have adopted open access lab books? That doesn't sound like any kind of lab that I'd like to be in. Too much control for my liking. (According to the article it's "where the cool people are." I don't think so.)
Open-Access Journals are here to stay and will only increase in popularity.
[Hat Tip: A Blog Around the Clock]