What???

They renamed the Sears Tower?

Although Sears' naming rights expired in 2003, the building continued to be called Sears Tower for several more years. However, in March 2009 London-based insurance broker Willis Group Holdings, Ltd., agreed to lease a large portion of the building and as part of the agreement obtained the building's naming rights. On July 16, 2009, at 10:00 am, the building was officially renamed Willis Tower.

I hope that the good people of Chicago have the sense to simply ignore this.