In your profile there in a box named "interests" and in that box you can list your engine names, among other things. It's a small box, but it stretches to 250 letters.
All registered users can then click the Members List and do a Search Members > Advanced Search, then fill in the Interests box with an engine name.
Click "Search Now" and the server will return a list of user names who have placed this engine name into their interests box.
You can even do the same search for a particular city, state or country by filling in the location box.
Take afew minutes and click "User CP" and make sure that your profile is filled in with the appropriate information about yourself.
The Members List and your Profile Page are only viewable by registered members.