Genealogy (from Greek: γενεά, genea, "generation"; and λόγος, logos, "knowledge") is the study of families and the tracing of their lineages and history. Genealogists use oral traditions, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kinship and pedigrees of its members. The results are often displayed in charts or written as narratives.
Data sharing among genealogical researchers has grown to be a major use of the Internet. Most genealogy software programs can export information about persons and their relationships in GEDCOM format, so it can be shared with other genealogists by e-mail and Internet forums, added to an online databases, such as GeneaNet, or converted into a family web site. Many genealogical software applications also facilitate the sharing of information via CD-ROMs and DVDs.
Social networking service (SNS) websites allow genealogists to share data and build their family trees online. Members can upload their family trees and contact other family historians to fill in gaps in their research. Creat A Account