From now until January 1, the LostCousins web site is completely free for all registered members. Of course, registration is also free.
LostCousins claims to be the only family history site able to match you with others researching the same ancestors. It claims to do so in confidence. You simply enter your ancestors and other relatives from the 1881 Census of England, Wales, Scotland, or Canada; then click the Search button. Obviously, this does not work for ancestors in other countries.
Details may be found at http://www.lostcousins.com