As a tool for professional networking, LinkedIn does many things very well, but I’ve never found lists of contacts or friends (a la Facebook) to be particularly compelling. Over at LinkedIn Labs can be found some tools and experiments that look to expand what LinkedIn is capable of. I finally had a chance to play with LinkedIn Maps (requires a LinkedIn account) and the results are striking, as an at-a-glance look at who you know and how those people relate to each other. There’s some odd outliers, but it’s pretty obvious in my circle who worked together with me at each company.
And while you’re at it, if you need a resume, you can easily generate a nicely formatted resume from your LinkedIn profile.