Ed Greenwood Lore IS "Canon"
A number of posters in this thread have advanced their own opinions on whether or not Ed Greenwood's postings on Candlekeep and elsewhere are "canon" or not.
The truth is this: as a former TSR legal eagle, I can attest that in the original Realms purchase agreement, it is stipulated (I'm paraphrasing the legalese here) that anything Ed Greenwood "publishes" about the Realms, in any media that exists now or in the future IS "official" (canon) as anything printed in any TSR (now WotC, but only because they own TSR) product, UNTIL they contradict something specific that Ed has said, in a future product. In other words, anything Ed says at a con, writes in a published article or product, or posts on the Web IS canon. Until contradicted.
To reiterate: until specifically contradicted, any Realms material Ed Greenwood posts IS canon. Rich Baker's opinion or postings are immaterial; if the original Realms agreement is broken, the Realms revert to Ed and he regains full control of the Realms, and "canon" is whatever he says it is.
I'm not taking sides on anything said in this thread, mind you. Just setting posters straight on what's canon and what's not. These are the facts, regardless of anyone's opinions. (I've even heard WotC staffers deny this, but it doesn't change the applicable law or the original agreement.)
I find it odd, frankly, that this is ever argued over. There have been many, many adaptations, game and film and otherwise, of Tolkien's LOTR, but no one questions that what Tolkien wrote was "canon" or not. (And to spare us all a lot of catty posts, I'm NOT equating the Realms and Middle-Earth in terms of quality. That's purely a matter of personal taste. I'm using an illustration of the creator of a popular creation that became an intellectual property rather than remaining only a printed-fiction series.)