As a trusted source or a credible reference, no. But as a general source of knowledge, I think it's outstanding. Everyday I wonder about things, and for a overview of some subject it's an easy way to read up on things that otherwise I would never bother to look up.
If you met someone who knew nothing about Clint Eastwood except that he was involved in films, and you told him twenty things that were true about Eastwood and one little thing that might not exactly be true or came from a questionable source, would you still not have enlightened this person? Of course, you would have. But certainly, if the person were writing a paper or book on Eastwood, then it would be prudent to use a slightly better source, right? That's how I look at it.