Rob Griffiths of Mac OS X Hints – Get the most from X! says: I’m hoping to expand the pool of people helping other people with this site. I’m also hoping that, with everyone’s help, this can become a key resource for quickly finding the answer to a question. I was personally getting somewhat frustrated at having to jump all over the web to find answers to OS X questions. There are some excellent sites out there (make sure you check out the OS X Web Sites link!), but none that seemed to focus specifically on providing how-to’s in a quick, easy-to-use format.
And this is a great site — after two or three minutes of browsing I’ve already learned several tips of direct relevance and use to me. More exploration should be very rewarding!