A growing number of sites let you use OpenID to sign in (e.g., to leave comments). I looked into running my own OpenID provider, but in the end I decided to use OpenID delegation to launchpad.net. One good thing about OpenID delegation is that I can transparently switch this to another provider if my hate for Ubuntu/Canonical reaches a critical threshhold, so this is not an irrevocable decision.

This is the best tutorial I found (and the one that introduced me to OpenID delegation). This launchpad thread led me to a template for the delegation to launchpad. This is my OpenID delegation URL which I intend to use henceforth to identify myself .