Facebook is under investigation by Ireland’s Data Protection Commission on charges of privacy violations, including collection of “extensive profiles” on non-users who are in contact with Facebook members. The complaint alleges that Facebook Ireland gathers “excessive” personal information “without notice or consent.” Privacy rights lawsuits against Facebook are also filed in Mississippi, Louisiana, Kansas and Kentucky. The Federal Trade Commission is probing complaints about the Palo Alto-based social network and Congress is considering hearings.