Internet Imposters

The BBC have reminded fans yet again that David does not use any social networking sites or forums. They have issued the following statement:
There have been several recent cases of people posing as David Tennant and other members of the Doctor Who cast in Internet chat rooms and forums - as well as setting up social networking profiles in their names.
So fans are not disappointed or misled, we'd like to point out that both David Tennant and incoming Eleventh Doctor Matt Smith do not use social networking websites, chatrooms or forums. They wouldn't want fans to think that anyone who uses these are talking to the real actors.
For their own safety, we would strongly advise all Doctor Who fans to ignore any such postings and not be fooled by these impersonators - it will never be David Tennant or Matt Smith online.