netbuzz writes "There was no Twitter, Facebook or YouTube on Sept. 11, 2001. Google News was a year from launch. And while most stayed glued to their TV sets to watch the unfolding horror, there was blanket coverage online (and more than enough demand for it to buckle major news sites under unprecedented traffic). Here’s what some of those sites looked like on that historic day." Link to Original Source
If it happens once, it's a bug. If it happens twice, it's a feature.
If it happens more than twice, it's a design philosophy.