I am currently working on a personals site that registered users can search by city, state, country, zip code, and interests. The program also displays the current day, month and year, current online users, random personals ad as well as the current months b'days, all with links to that users profile. It also displays how many current registerd members there are. The ability to retrieve their username and/or password and the ability to edit their profile.
In the profile there are a number of different fields that can be used as well as to display a pic, refer that users profile to someone else and to bookmark a particular profile if the visitor wanted to.
I am currently working on an instant messenger where the current on-line users can IM each other.
It uses MySQL database to store all the user information.
Is this what your looking for? Let me know.