LinkedIn Events offers not just event search, but recommendations based on the contents of your profile, sophisticated information about attendees and updates about the events in your LinkedIn update feed. Eight thousand events are already listed and event organizers can ad more.
The recommendations are key here. Recommendation is like the search you didn't even know you wanted to do - it's a great way to surface value from noise.
Unfortunately the events page is down at press time, but we look forward to its return.
We like LinkedIn alot here at ReadWriteWeb (it's one of the primary news sources for our new site about hiring activity) and we think Events is a great addition to the service. The events feature appears to be built on the OpenSocial platform, so there's a good chance that these features will be available in other settings beyond LinkedIn in the future.