While you might not have a database of 250,000+ people (the number of Facebook users as of July 09) the viral nature of the platform can not be disputed as users can share and pass along event invitations.
Now when you create an event you have the ability to filter who you invite based on them attending a past event, a few simple feature but it certainly help for better targeting and ideally less “spam” related invites. Once Facebook rolls out its much anticipated payment system it will have all the major components required to create, promote and help sell events.
Founder of Profectio of business sites which includes 
