Here's the thing about expertise: it's hard to define. It may be possible for a small group of relatively homogenous people to agree on who is and isn't an expert, but getting millions of people to do so is practically impossible. The Britannica uses a learned editorial board to decide who will write its entries and who will review them.Shortcut to Omniscience
Wikipedia turns this on its head by saying, essentially, *Anyone can write our entries but those entries should consist of material cited from reliable sources.* While the Britannica says, *These facts are true*, Wikipedia says, *It is true that these facts were reported by these sources*. The Britannica contains facts, Wikipedia contains facts about facts.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.