The app will ask for email & chat permission. If an user allows the app, it sends a chat message to all online friends of the user and redirects the user to another url (loaded into the app iframe). After a certain time, the app removes the user so that the user can not report the app (if the user again browses to the app, it will again prompt for permission/authentication). The app will save name, email, country and sex of an user into a simple MySql table.
I know, many of you already made this app. If you have, I will buy it. My budget is $50-$100. I need it ASAP. Demo is appreciated. The source code should be well documented so that I can make any minor change if I need.