Users can choose to sign up either using their Facebook or Twitter accounts or through an e-mail address as well.
The blog reads,"We're really excited to have the capacity to offer Pinterest to more people and if you're a Pinner with friends who've been waiting on the sidelines, we hope you'll let them know. Happy pinning to everyone!"
The move will help the site attract more users on a daily basis, which is currently about 1.1 million. As per reports from social media marketer Tamba in April, the social photo sharing service had doubled its number of daily unique visitors to 4 million since January.