37 Signals' "keep it simple" philosophy as one reason why micro-blogging tool Twitter seems groan under the strain of heavy-load days like the State of the Union or Super Bowl:

In March 2007, a Twitter engineer told an interviewer that he was having difficulty getting [Ruby on] Rails to handle his company's massive spike in traffic. [Rails creator David] Hansson responded by sending a heated email to Jack Dorsey, Twitter's CEO, and chastising the company on his blog for playing the "blame game" instead of solving its scaling problems itself.
More from a Twitter developer the challenges of scaling Rails to handle the app's popularity. (Character count: 639) (Ha, I just went to hit Twitter.com to confirm that posts are indeed limited to 140 characters, and the site's down.)
Feb. 29, '08
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Nancy Scola I'm a Brooklyn-based writer obsessed with technology, networks, social organizing, and the politics of food. This is my online home where I talk about those things and whatever else strikes my fancy. Learn More