Never include personal information in your profile and do not use any personal information in your username. (worldofsingles.com)
Members of dating services learn more about each other and decide where they should have, on the basis of information in a profile. (onlinexdate.com)
Your searches will be narrowed down based on information in your profile and the profiles of potential matches, and can also be narrowed down by region. (australiandatingsites.org)