The Citadel is an archive of information for George R.R. Martin's A Song of Ice and Fire.
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I did get to ask GRRM a question, though I'm sure this isn't really news to Ran and other devotees. I asked if we'll ever get maps of the whole world, or specifically areas like the Free Cities or Asshai. He said that he adds one map per book, but didn't expand on that. (if that's interesting enough for SSM, feel free, I just assume that isn't news to you).
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.