Ask HN: Rate this startup idea: group calendar for things you're "anticipating"

I've been busy working on a different startup, but this idea has been floating around in my head. What I would like to build and use is a calendar where I can add all of the events that I'm looking forward to - movie premieres, video game releases, album releases, product releases (like the iPhone 4), television shows, Web shows, etc.<p>If your event title (ex. Fable 3 Release) is similar to something another person entered, the system would ask you whether you'd like to "piggyback" onto the event.<p>From the event page, users can write comments (discussion), add pictures, links or other information.<p>Three separate calendars on the Web app: -your personal calendar -a composite of your "friends'" calendars -a "public" calendar - where the most popular events go.<p>Why I'd like to build this: it would be fun to track what's happening this way, but it would be even more fun to see what other people are getting excited about. After that "bee" campaign for Halo 2, I couldn't believe that almost all of the people around me weren't waiting for its November release date. I'm sure that my friends had similar events in their life. Even though I don't have a lot to be excited for tomorrow, I'm sure one of my friends does - and maybe it's something that would interest me.<p>Monetization strategy: most likely, would get organizations to put a sponsored event on each day's calendar (promoting an event) similar to the way that Twitter's promoted trending topics are "real" topics, but are just given a boost by the promotion.<p>I'm sorry this pitch is so poorly put-together, but I wanted to get the full extent of the idea onto the page.<p>What are your thoughts on this idea?