I had the same problem. I sent two emails to the email alias mentioned on their site and never received a reply. Honestly, I'm not sure how well they'll fare in the long run without taking a much more open and inclusive approach to the use of their API. They seem to be ignoring the long tail, which isn't a recipe for success in the new world of Web 2.0. Hopefully, they've got something in the works. If not, the next social resume site that comes along with a good, open API will win the battle overnight. There's so much they could be doing with this API to capitalize on the need for identity on the web. If I were working at LinkedIn, I would be working hard to become an OpenID provider and would also make a simplified avatar provider available that worked similar to Gravatar.com. I think people are tired of entering their data over and over and over on sites, and providing a solution like Gravatar.com would be a great way to provide a service to their members and build the LinkedIn brand at the same time. But...I don't work at LinkedIn, so I'll just have to settle for sitting on the sidelines and waiting ant watching.