To OpenID or not to OpenID? Is it worth it?

Question

Does OpenID improve the user experience?

Edit

Not to detract from the other comments, but I got one really good reply below that outlined 3

Answer 1

Well the promise of OpenID is a single sign on for multiple websites. The issue is that it's still pretty obscure from a mass-market perspective. I personally would not implement it in a broad customer-facing application just yet.