One of the most sought-after uses for the internet, in my opinion, is public records resources. Nowdays noone wants to go down to their local library and browse through old archives and books to find out the information they are searching for. Far more convenient is the new option - find national or county public records online.
You can research marriage and divorce records, birth and death records, business information, property records, court and criminal public records, links to employment searches, unemployment benefits and more. It's absoulutely luxury after having spent an afternoon down at your library, as anyone who's been through that experience will know.