Well, they have good pictures, I'll give you that. I go there occasionally to grab pictures from them.
But otherwise? More than half their articles are incorrect, and they change now and then based on whim. There's a lot of infighting between the people in charge. And, well, there's a lot of "mistakes" and incorrect articles.
I agree with you Miba, it's good for some visual reference materials but this whole topic brings up an issue that I think is somewhat irrelevant...i.e. Star Wars canon...
I know we all want there to be a definitive story line with clear cut and explicit characters and situations but Star Wars was never meant to really be that kind of universe.
Star Trek had "star dates" way back in 1968, granted, they didn't really have a continuity worked out back then so the date meant nothing until the trekkies got together in the 70s and 80s and developed the ST canon. Nevertheless, ST is more of the type of show that is designed for that kind of organization and canonization.
Anyway, what I am saying is that, yes, it is very frustrating trying to nail down timelines, characters and various other details but I think that is indicative of Lucas's lack of vision. As we all know he was not really sure he was ever going to get the first film made... since those days he has tried to convince us all that he had it all planned out from the beginning, but we all know that's BS.
I give the Wookieepedia folks credit for making the effort to untangle the mess but in the end I don't think there is ever going to be a definitive canon. I think we all have to just work it out for ourselves. I can't site specific examples myself but I have been, on a number of occasions, sadly disappointed with a lack of continuity and consistency with Wookieepedia but as pointed out above, we are talking about a body of information spanning over 30 years, several video games, novels, comic books, RPGs, toys and fan-based mythology. Writing a master's thesis gave me a unique perspective on how difficult it is to collect, analyze, synthesize and present vast quantities of often variable and complex information from multiple sources.
Long-story-short, I think it might be expecting a bit too much to have a fully consistent, maintained and complete, 100% accurate canon of the Star Wars universe.
But every effort counts and it's better to have people out there trying to make sense of it all and maintaining an open discourse than if we were all just making it up ourselves. Or maybe that would be interesting too!? I know I have my own version of the SW universe that I prefer over the "official" version.