The Rookileaks are a part of the Being Human blog. There are several e-mails of Dominic Rook which are leaked. It is possible that they are leaked by Alex since she broke into the archive and read some of the e-mails. She even wrote one e-mail herself. The e-mails give a lot of background informations about several characters (Bernie, Fleur, Yvonne Bradshaw, Adam Jacobs, Carl, Dan, Michaela Thompson, Regus, Christa Stammers, Dominic Rook, Alistair Frith, Sykes, Titania, Christine Frith, Sandrine Belllerose, Giles Hopkins, Kate Whitfield, Allison, Emrys), demons, vampires, werewolves in general, the Department of Domestic Defence etc. Here are the e-mails + references: