stack exchangeStack Overflow, which runs a popular programming question-and-answer site, has raised $12 million in a second round of funding. It has also adopted a new name, Stack Exchange.

The programming site supposedly received 95 million pageviews in February, so it may seem like a bad idea to rename a property that has already built a big audience. In fact, it looks like will continue to operate as a programming Q&A site. (It also recently launched a job-finding service called Careers 2.0.) The new name, meanwhile, should signal that the company’s goals are bigger than a single website, no matter how popular.

Specifically, the Stack Exchange Network now includes 45 similar Q&A sites covering topics like cooking, photography, and physics. The company says the network received 20 million unique visitors last month.

The new round brings Stack Exchange’s total funding to $18 million. Index Ventures led the funding, with participation from previous investors Spark Capital and Union Square Ventures.

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