Formspring, the social-networking site that lets users ask questions about one another, has received new funding and is announcing a new feature.

Formspring founder and chief executive Ade Olonoh said in a blog post that the site has raised $11.5 million through a group of investors headed up by Redpoint Ventures in partnership with Baseline Ventures. Olonoh said that the new funds will help the Formspring team grow and allow the site to find ways to reach new audiences in different ways.

Launched in November 2009, Formspring has more than 20 million registered users and 40 million unique monthly visitors. Olonoh said that his site gets more than two billion responses every day. With this new feature, that number might soon see an uptick.

Formspring's new Respond button allows users to react to the content they see online.

"The Respond button takes the natural & personal responses people are already sharing with friends on Formspring and extends this experience to the entire Web," said Olonoh. "This means any Formspring member can respond to any content online, whether it's an article, a product, or a photo."

The button will appear similarly to the existing buttons that appear around the Web, linking users to sites like Facebook, Twitter, or Digg. Olonoh said that a handful of sites took part in a pilot program testing the Respond button's effectiveness. It can already be found on IGN, AskMen, Uproxx, and The Huffington Post.

"Any site - large or small - can try out the Respond button today - whether it is placed within an article, or used to ask a 'Question of the Day,' if gives sites a new way to interact with their visitors and we are excited to see the many ways it will be used in the coming months," Olonoh said.