My site is cited by numerous museums, libraries, and reference sites as being an authoritative source for information related to my industry. And after reading your comment I looked through Wikipedia for several hours and my site is one of the most commonly referenced and cited resources for my subject matter. For example: http://en.wikipedia.org/wiki/Baseball_cards http://en.wikipedia.org/wiki/Topps http://en.wikipedia.org/wiki/Upper_Deck_Company http://en.wikipedia.org/wiki/Rookie_cards
With all that said, since we cover niche news stories the length / depth of the content is dependent on the stories themselves. For instance, if a company releases an updated checklist for one of their sets, it may only give me enough information to create a 200 word article. But since its information that is both helpful and relevant to my readers, I publish it anyway. Maybe its time to cut that portion of my business out though and double down on other types of content so that I don't have news stories pulling the rest of my site's content down.