The company will use the funds to enhance its platform, expand its headcount and develop tools to help brands manage their Foursquare campaigns.

In a blog post, Crowley said: “With this new round of financing, our main priority will be to expand our organisation. We’re hoping to build a world-class engineering organisation, based primarily in our headquarters in New York City.”

The round of funding was led by Silicon Valley-based investment firm Andreessen Horowitz.

Foursquare’s original investors O’Reilly Alpha Tech Ventures and Union Square Ventures, which invested a combined sum of $1.35m in the company last year, also participated in the current round.

In a previous interview with new media age, Crowley said the service was adding 15,000 users a day and indicated Foursquare will eventually launch in the UK (nma 10 June 2010).

“As we expand, it’s not inconceivable that we’d have some people in Europe. But it’s not on the immediate roadmap,” he said.

Brands such as Domino’s Pizza, Jimmy Choo and The Financial Times have all experimented with using Foursquare as a way to reach new audiences (nma 8 April 2010).