Game of Thrones is a site for the HBO-series based on George R.R. Martin's A Song of Ice and Fire.
New to the series? Read our spoiler-free review of A Game of Thrones.
Jackie (aka JacMac30) posts a lengthy report of everything they witnessed, here. Lots and lots of details regarding the appearances of several actors, costumes, etc. Fantastic information. She notes staff were quite eagle-eyed about photos, apparently there has been some annoyance at the photos that have leaked to date (although all of those have been of the exterior of the castle).
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.