I am curious about the effectiveness of LinkedIn. Does anyone else out there have any comments about this? While I only link to people I actually know and could say something about, there are people with hundreds of links. How is that helpful? It means that within one or two "introductions" you are talking to people who do not even know you remotely. On the other hand, at least you are talking to them. At first I thought it was just a more professional Friendster, but it appears to have heads turning.