If you come here from the XING network, it may be overwhelming and I suggest to check a few of the well established groups, forums and blogs here first: Berlin could be a great start.
I personally think Jennifer Rohn’s Mind the Gap is a great blog. But there are other brilliant bloggers here: Brian Clegg, Maxine Clarke and Henry Gee to name a few.
Martin Fenner has created a great forum about science blogging

So have a peek and I would appreciate if you would find new possibilities of networking here.