Although not on Facebook I look at it from time to time to keep up with events/changes of info as referred to by Travs, especially for WFRA stuff. It is a pain though as every few seconds a page pops up, obscuring what I am reading, telling me to log in to my account which I keep having to delete.
I must say that many of the videos put on sites like FellrunnersUK by both top and average runners are just blatant advertising of a product and/or themselves!