It hasn't taken long for Instagram to catch on. Just seven months after its launch, the iPhone photo sharing app has reached 4.25 million users. The news comes by way of a tweet by the New York Times ' Nick Bilton after he said he chatted with Instagram CEO and co-founder Kevin Systrom over coffee.
The rising star of these is Instagram , a start-up in San Francisco with just four employees. In eight months, the company has attracted close to five million users to its -only service — no doubt earning the envy of its more established rivals. And Instagram is steadily growing, adding about a million users a month. The app emphasizes simplicity.