Keith's note: According to State of the Federal Web Report, issued 16 Dec 2011 by the .gov Reform Task Force
"Some agencies, such as NASA, have a relatively small number of domains compared to other agencies, yet NASA reported the highest number of public websites, with 1,590."
NASA is quoted in this document as saying:
True number of systems unknown: Several agencies admitted that it was not clear how many CMS [Content Management System] are in use: "This number is a guess. No one at NASA knows the number with certainty."
"There is no uniform agency-wide process for ensuring content on the other NASA sites is accessible, updated, accurate or routinely improved. Individual programs and projects at the Centers and offices at NASA Headquarters manage their own content and are responsible for accuracy and accessibility."
"There is no agency-wide process for reporting the results of these center processes or establishing any of them as best practices."