But open source success, Thornton quickly found, has a dark side. He felt inundated. Countless people wrote him and Otto every week with bug reports, demands for new features, questions, praise. Thornton would finish his day job and then spend four or five hours every night frantically working on Bootstrap—managing queries, writing new code. “I couldn’t grab dinner with someone after work,” he says, because he felt like he’d be letting users down: I shouldn’t be out enjoying myself. I should be working on Bootstrap!