Reddit co-founder and CEO Steve Huffman has unveiled more specifics today on the site's new content policy aimed at curbing at least some of the harassment and abuse that plagues the online community.

The policy update introduces a new concept, "quarantining," that will make some offensive content viewable only to those who explicitly opt in. In an AMA with Reddit users last month, Huffman defined this type of content as "you know it when you see it. [It] violates a common sense of decency."

Huffman also said today that Reddit had banned a handful of subreddits that promoted racist views and one with graphic content involving minors.

Though Huffman said he was confident the new policy "strikes the right balance," some users were not so easily placated.

"I appreciate the general idea of what you're doing," one user wrote. "But 'generally make Reddit worse for everyone else' is so vague as to have no meaning."

Since the company first said it would commit to addressing its dark side—a move that led to unrest on the site—some of Reddit's highest-profile female executives have departed from the company. Ironically, the tumult hasn't seemed to hurt the site's traffic: Reddit pulled in 195 million visitors last month, up from about 164 million visitors in June.