If there were three words to live by in 2011, they’d be: #Egypt, #tigerblood, and … #threewordstoliveby. According to Twitter these were the top 3 hashtags used on the micro-blogging site in 2011.
Rounding out the top 10: . #idontunderstandwhy #Japan, #improudtosay, #superbowl and #jan25.
From the Twitter Blog:

When it comes to football, Dallas was the hottest in 2011.
“Pretty Little Liars” took top honors in television (followed by “Two and a Half Man”).
“Thor” was the most Tweeted movie. And the McLobster (?) was the most discussed food and drink item.
Click here to browse through Twitter’s somewhat Pinterest-like slideshow of the year in review. The first three entries–The year in stories, Who joined?, Hot topics–in the five-part series are now live, with two more to come sometime this month. Oh, the suspense!
Expect more to come. Google, Facebook, Foursquare (Starbucks #1 check-in?) are all likely to be rolling out their perspectives on the past 12 months.

