The very first time I saw the Yahoo! billboard back in the early 2000s, I thought to myself that this was one of the most well designed billboard out there. Though, I never had the chance to photograph the sign throughout my prior visits to the city, I made an effort to visit after finding out that it is scheduled to be taken down this December.
Here's a good write up on the history of the billboard that will probably make you appreciate it a little more: http://www.thesfegotist.com/editorial/2011/november/16/end-era-yahoo-billboard-comes-down
The billboard is schedule to be brought down once a new owner purchase the space.