I'm not really sure whether this should be "social networking" or "other dbs" or a new URL relationship type or something else, but it would be great if it was possible to link bandsintown.com URLs to artists and events.

Artist: http://www.bandsintown.com/DavidRovics
Event: http://www.bandsintown.com/event/9302056 (this will usually be a longer URL when following links from the site)