Hate fantasyliterature.net, it sells things and the reviewers are just people who the webmaster thinks writes good reviews.   Terrible choice for an external link.  IMBD is questionable because his TV and movie work is much less notable than ASOIAF - I'd use it as a ref for his TV work instead.  That fantasy fan page just looks like a fan page, and GRRM doesn't seem to have any actual content on the page.  I suspect spam actually, whoever added it probably splashed it across a lot of pages.  Westeros I don't think is appropriate here either, unless he frequents it.  ISFDB and Internet Book List seem redundant, and might be better as references also.  Of the lot, I'd probably stick with BWB, perhaps westeros and delete or reference the rest.