Here's what they say:
The Sunlight Foundation is launching a new citizen journalism project. This distributed research project asks you to dig through the official, taxpayer-funded Web site of a member of Congress, and help determine those that act as genuine tools for transparency. We're asking questions in three broad areas: do they provide access to basic information on what they do in Congress (the bills they sponsor, the committees they serve on); do they provide information from or access to any of the legally-required disclosures they have to file (on personal finances or junkets they take), and do they provide any additional information that furthers transparency (their daily schedule, lists of earmarks they've asked for or gotten).
To get started, check it out here.