I’m convinced LinkedIn has huge potential. I’ve been using it for finding new clients. While looking for new clients on LinkedIn, I decided to write a book about what I was learning. Then someone on LinkedIn proposed I offer this as a service, instead of a book. A few weeks passed, working more on the book and thinking about that suggestion, and then I realized I could do both with a forum. The sub-forums correspond to the sections of the book.
Check it out here: Linked Experts Alliance. One-click login with your LinkedIn account–no password to remember.