Geoffrey A. Fowler:

In his suit, Mr. Ceglia claims he signed a contract with Mr. Zuckerberg on April 28, 2003 to develop and design a website in exchange for a $1,000 fee and a 50% stake in the product. The contract stipulated that Mr. Ceglia would get an additional 1% interest in the business for every day after Jan. 1, 2004, until it was completed.

My guess would be that if this had any legitimacy we would have heard about it long ago.