How Can I Locate Lost Latter-day Saints?

This FAQ gives a few ideas for trying to locate someone you've lost contact with. Another idea would be to search online both in a general search engine and through a list of Internet white pages. Do you know of other resources or ideas for finding someone who's lost? If you do please leave a comment.

Note: The membership department of The Church of Jesus Christ of Latter-day Saints is no longer processing Membership Locater forms. One of the reasons I was given is that the number of requests was overwhelming, although there may be other reasons.