Nice idea and great execution, congrats. I tried it for a while and I already discovered some friends who got married (and I was not aware of it) and some other friends who are not divorced.
I would love your web app even more if it would provide me with a list of updated events. I don't check FB very often and it would be lovely to just use your service once in a while and see, in a glance, who got married, who got divorced, etc.