To aid in your research, there are also sites that allow you to search through census, vital, and military records after you pay a subscription fee. These paid sites are great, but before you pay the fee, you may want to check with your local library or genealogy society to see if that site's information is available to you as a card holder or society member. If not, the fees for these sites are reasonable and can be paid in small amounts or in one lump sum for a longer subscription term.
Ancestry.com is one paid subscription site. This site could possibly be the largest clearing house site for genealogy information on the web. The folks at Ancestry.com offer the most complete census records available. Other information available at this site includes military records, shared records from other researchers, and some vital records.
HeritageQuest.com is another genealogy site, but its focus is the sale of genealogy software, data CD's, as well as subscription information and resources. It's subscription offerings are much the same as Ancestry.com, although not quite as extensive.
There are also subscription sites that are available at no cost, but use subscriptions and a moderator to protect those who make use of the site. Yahoo.com and MyFamily.com are just two of these free subscription sites. These sites are designed to keep families or groups of researchers in touch. Only those who are invited to join a site can view or add information to a site and the subscription is to protect the information contained in the site by limiting those who can have access to it.