Twitter users say thank-you to Aubrey McClendon - Article Photos 1/13

In this Sunday, Feb. 19, 2012, file photo, Aubrey McClendon, CEO and chairman of the board of Chesapeake Energy Corp., watches the Oklahoma City Thunder play the Denver Nuggets during an NBA basketball game in Oklahoma City. Chesapeake said Monday, June 8, 2012, that it plans to replace four of its existing board members in the next few weeks, including McClendon. (AP Photo/Sue Ogrocki, File) ORG XMIT: NYBZ148