To blog or not to blog, not a real choice there...
Collaborative Web between open and closed science
Science blogging is a very useful system for scientists to improve their work, to keep in touch with other colleagues, to access unfamiliar science developed in other fields, to open new collaborations, to gain visibility, to discuss with the public. To favour the building of blog communities, some media have set up networks hosting scientists' blogs, like ScienceBlogs.com or Nature Network. With some interesting features and many potential uses.