Jack Dorsey, the 35-year-old tech star who runs mobile payment company Square, today announced what he called an "epic" deal with Starbucks that could bring the "Pay with Square" app into the mainstream.
How big? It's too soon to say for sure, of course. But a firm that researches private companies, PrivCo, calculates that Square's deal with Starbucks will add $120 million in annual revenue for Square next year and, even more impressive, boost its valuation by $2.2 billion by the end of 2013. That would give Square -- already one of the most highly valued private tech companies … Read more