US GenWeb is an outgrowth of that original Kentucky project. It aims to have a genealogy website for every state and county in the US. Although the project is less than a year old, most counties are up and running to some extent, although many are still seeking to be "adopted" by permanent coordinators. The idea is now spreading internationally to the concept of a World GenWeb.
To get an idea about the scope of the original Kentucky project, read Everton Publishers' Review of the project.
USGenWeb and VAGenWeb are.totally volunteer-run, non-profit operations. Volunteers were found who were willing to coordinate the collection of databases and generally oversee the contents of the web page for each state and county. Volunteers are still needed in a number of areas, particularly in gathering and inputting databases.
People with Alexandria-related genealogical data, family Bibles, cemetery lists, GEDCOMS, etc., that they are willing to share with other researchers.
People with printed resources, CD Roms, etc. who are willing to do lookups.
People in the DC / Northern Virginia area and further afield who are willing to gather and input data for on-line searchable databases, e.g. parish registers, cemetery lists, etc.
People willing to input Alexandria Census Data as part of the USGenWeb
Archives' new CENSUS
PROJECT (aiming to have all census records on-line and searchable!!)