While Lucas et al. have made their feelings clear, we still have differences of opinion by different users; for example, the mods on SDN claim that SW EU is canon, but ST's EU isn't-- even on the movie-novels.
Various users here on SFJ have also made extensive claims based on the EU, and so they all come down to a matter of canonicity; and likewise I'm tired of repeating the same old fight about it-- including the following paste:
However despite this, SDN still has its policy-- which is fine, since it's a free world-wide web, and so they're free to weave theirs as tangled as they want.LUCAS: I don't read that stuff. I haven't read any of the novels. I don't know anything about that world. That's a different world than my world. But I do try to keep it consistent. The way I do it now is they have a Star Wars Encyclopedia. So if I come up with a name or something else, I look it up and see if it has already been used. When I said [other people] could make their own Star Wars stories, we decided that, like Star Trek, we would have two universes: My universe and then this other one. They try to make their universe as consistent with mine as possible, but obviously they get enthusiastic and want to go off in other directions."
- George Lucas, Flannelled One, Aug. 2005 - "New Hopes" interview in Starlog #337
"The only relevant official continuities are the current versions of the films alone, and the combined current version of the films along with whatever else we've got in the Holocron. You're never going to know what George's view of the universe beyond the films at any given time because it is constantly evolving. It remains elastic until it gets committed to film or another official source. Even then, we know there's always room for change.
[...] Anything not in the current version of the films is irrelevant to Film only continuity."
--Leland Chee, 2006 at StarWars.Com:
"Within the issue of Starlog magazine with the War of the Worlds cover is an interview article with George Lucas. He stated something which he had said before, which is that he doesn't follow the SW EU, he doesn't read the books or comics. He also said that when they started doing all this (which is allowing other storytellers to tell their own SW tales), he had decreed that the Star Wars Universe would be split into two just like Star Trek (I don't know nuts about Star Trek, so don't ask me about that), one would be his own universe (the six episode movie saga), the other would be a whole other universe (the Expanded Universe). He continued to say that the EU tries as much as possible to tie in to his own universe, but sometimes they move into a whole other line of their own.”
--- Sue Rostoni, Lucas Licensing (LLP Managing Editor), Sept. 2005 - StarWars.com forum post:
The problem, of course, is when it inspires copycats and newbs to begin following suit, and wasting everyone's time with huge wankfests based purely ON the EU. For example, you-know-who claiming "DEATH STAR POWER FIGS CONFIRMED" is 100% taken directly from the EU-- along with various other threads which claim to "prove" similar pro-Wars, anti-Trek claims.
If we can get a policy-ruling for this board, it would REALLY make things a lot simpler for everyone. Otherwise we'll get the same arguments from Warsies about how this or that SW novel, comic-book or fan-fic said this or that-- even though it's contradicted by everything in the movies, they'll just deny the blatant contradictions.
(And of course, then there's their various ridiculous arguments "proving" EU to be canon, often based on outright lies and ignorance regarding various policies and persons-- all 100% false, but impossible to deny unless one has extensive knowledge about the inside-scoop, which most people DON'T have).
So as long as there's no policy here on EU canonicity, then every argument is pretty much stalemated by that one simple fact, as it all comes down to some Warsie drawing from the SW novels.
We can always easily argue what's visibly on-screen; but when they mine the novels for the most outrageous power-figs, then all we can do is deny canonicity, if any ounce of sanity is to be preserved; otherwise we are stuck arguing the novels in question, and that's pretty must just escalates the size of the "pile," and it grows indefinitely.
In any event SFJ owns the site, so it's your call.