I mostly see upsides. Instead of uncertainty about random trivia, the conversation can be based on certainty about amazing trivia.

Did you know that early South-Americans used the shells of giant turtle-like mammals as houses? Isn't that crazy? Here, check out a picture of one. http://upload.wikimedia.org/wikipedia/commons/c/cb/Glyptodon...

Or as xkcd put it, you are one of the lucky 10,000! http://xkcd.com/1053/