The Hill published an article discussing the use of Twitter by Members of the U.S. House and Senate and the need to update the franking rules to reflect the new social media realities. The franking rules regulate the content and timing of communications by Representatives and Senators using official resources. Traditionally, the franking rules regulate the use of direct mail, emails and internet communication tools such as websites paid for with official funds to keep constituents informed about official activities. However, social media sites have changed the rules for keeping constituents informed about officeholder activities.
I agree that the franking rules should be changed to permit the expanded use of social media by officeholders. The public needs more information from and vehicles for interaction with their officeholders, not less. The Hill article can be found here.