I actually took the time to open this in IE and it is still shown as a pear.
I'm using Safari and it looks like a pear.
They might have fixed it since. Can't verify though, since neither runs on Linux.
How does it work
source
Essentially, the pear image's gamma is scaled down ridiculously. A certain metadata value in the image is then set, to make the browser scale it back. However, some browsers don't support this, still showing the apple image instead.