Cramster.com, an online homework help website created by Aaron Hawkey, Robert Angarita, and Kaveh Golabi, has been acquired by Chegg.com. The transaction details were undisclosed. Chegg said that this acquisition will add to their textbook rental and course planning services. Cramster had raised $9 million in funding from Primera Capital and Shai Reshef. Cramster has about 1 million users.