I'm having an annual Family and Friends party on August 23rd. I will have house guests from tomorrow until August 27th. I used evite.com to get the invitation and responses out. It's a great program that keeps track of who received the invites, who opened their e mail with the invite and then it lists all the "yes", "no", and "maybe" responses. You can also comment and send messages thru the program. It's great and saves lots of time;. So far we have 50 "yes" responses.