Most people regard typos as nuisances, just inconsequential mistakes that cause them to lose a second of time hitting the backspace key. But for Google, typos may equal big business, as Benjamin Edelman and Tyler Moore have estimated that they make the search giant $497 million per year. Edelman and Moore, who both call Harvard their home, coauthored a paper titled "Measuring Typosquatting Perpetrators and Funders." In a blog post summarizing it,