Yahoo! There is a "404" error?

If there is no page, "404 error", the so-called "404 Not Found" error message is returned, but in this picture taken by Ms. jkenning Yahoo! The advertisement of "404" is about like an error. What is that ... ....

Details of where this is the stadium are as follows.
The following is the whole view of the stadium.

What a beautiful day at the ballpark (err ... I mean, office) on Flickr - Photo Sharing!

Where is this stadium, here?

AT & T Park - Wikipedia

AT & amp; T Park (AT & amp; T Park) is a baseball stadium in San Francisco, California, USA. Formerly Pacific Bell Park, SBC Park (SBC Park). MLB San Francisco Giants is the base stadium.

But with this arrangement Yahoo! There is no choice but to look like "404 Not Found" ... It is a coincidence ... ....