A good place to start is in the photo section. Look for people that you used to know and then ask about them on the boards. Or just ask for them by their Bible name if you don't know their legal names. Or be open about your Bible name and that way others can find you. For instance I used to be Jemivah. For years I posted as such but then gave up the name...now I am just plain Jane.
I was able to find a few people that I used to know. For some it was good to reestablish contact but for others it was much more difficult. Our histories are so convoluted you know.
Good luck in your search.