A moratorium is in effect on adding information from Fire and Blood until December 20th.
So Spake Martin
So Spake Martin is an unpublished collection of George R. R. Martin's correspondence maintained by Westeros.org. Its sources include, but are not limited to, emails with fans, webchats, conventions, and interviews. Information from the archive is considered semi-canon.
I would have no problem with you collecting my "words" (by which I assume you mean interviews, public comments, letters, etc, rather than fiction), provided that I could ask you to pull down anything I decided I did not want up there -- misquotes, outdated info, slips of the tongue, etc.