Linkedin - activity picking up..
I started with Linkedin as an experiment and I have actually seen some benefit from it. I have forced myself to use Linkedin even when I could have used other avenues just to see the effect and to see if it actually kick starts something.
The benefits have not been enough to see any dollar value associated with it as the links I could have made other ways. There may be a critical mass effect at work here, once the network gets to a certain size and you have a certain number of contacts the value actually kicks in. I would be interested in hearing other users experiences.