If you couldn’t read a book to learn history, then TwHistory is attempting to teach your 140 characters at a time. They are establishing Twitter accounts for key historical figures and events, which you follow. Then they begin teaching you the history of the event through tweets.
We go through journals, diaries, letters, and other original sources to deliver the day-to-day lives of people who lived through some of histories most exciting times
I think for students this might be a great way to engage them more. Heck, for some of us that slept through class in school it might be a great refresher.