If you're looking for a healthy source of trivia facts take a look at the Windows Phone app Trivia Buff.
Trivia Buff taps into Reddit for the facts and each factoid is verified and has a corresponding article in support. Facts can be shared and Trivia Buff has Live Tile support to display facts throughout the day.
Trivia Buff's layout has two main pages. One listing the new facts for the day and the other to list your favorite trivia facts.
The trivia facts are updated daily and in tapping on an individual factoid you'll pull up the corresponding article which you can tag as a favorite, share via Twitter or Facebook and email to friends.
There's really not much to Trivia Buff other than a healthy supply of trivia facts. You can find out that the Black Death plague skipped Poland as well as discovering that armadillos can inflate their stomach to float across water. Overall, Trivia Buff isn't too shabby of an app.
Trivia Buff is a free, ad-support app for your Windows Phone 7.x and 8 devices. You can find Trivia Buff here in the Windows Phone Store.