QuinStreet, Inc. is a publicly traded marketing company based in Foster City, California.

The company was investigated in 2012 by 20 U.S. states for using deceptive marketing tactics to promote for-profit schools to U.S. veterans.

[2][3] QuinStreet Inc. acquired U.S. Citizens for Fair Credit Card Terms, Inc, which operated the CardRatings.com website in August 2008 for an initial cash payment of $10.4 million.

[8] An initial public offering on February 11, 2010, raised $150 million, with the shares listed on Nasdaq under the symbol QNST.

[16] The company was accused of targeting military veterans with deceptive recruiting practices for its for-profit school clients.