In other words, it's not just another of your average Today in History sites. This one actually gives you the content you want, where you want it... on your iPhone or iPod
Today In History is an effective tool to share: it simply offers snack sized pieces of information to get the reader hooked, lets them look up a bit more on wikipedia, and then once the seed is planted they'll hopefully act on it and seek more information in a library or in school.
Here's their website for more information: http://www.todayhistory.net/
And here's the Today in History iPhone application: http://bit.ly/diIMmS