Twitter CEO's wife uses the Contraction Tracker during her labor

Sara (@Sara), Twitter Co-Founder, Evan Williams (@Ev), went into labor and tweeted yesterday.  She tweeted "The Contraction Tracker was fun until the contractions got painful." Now, articles are popping up everywhere talking about it.

From Mashable:

• Twitter CEO's wife Tweeting While in Labour

Here are two from UK news sites:

• Twitter CEO's wife Sara 'tweeting' in labour
• She's having a baby (on Twitter)!