To everyone concerned about the donut picture and whether it gives you a virus:
The short answer: no, not anymore.
The long answer:
A few years back, someone discovered a security exploit in either a browser or an operating system- can't remember which. Either way, the way it worked was if you used an external program to add extra code to an image (there are tons of tutorials online in various places about how to do this) you could essentially give thousands of people a virus simply by them downloading and adding an image to their web cache.
If you look closely at this image, you'll see that it's almost gridlike. That's where the extra malicious information is added. Because the jpeg format is so versatile and compressed, the content and quality of the image are relatively untouched, yet there is still that 'virus' encoded within it. How the virus itself worked was that, either by random-number generation or some other method, at some random point in the future, as long as you had the image in your cache, you were susceptible to the payload, which in this case was a screamer that displayed a 'shocking' image and played a loud sound through your computer's speakers.
Of course, with time, these exploits get discovered by people who work at the OS and browser companies, and it was eventually fixed and removed. Nowadays, unless you're using those older browsers or operating systems, you're not in any danger by looking at, or even saving, the image. The thumbnail, compressed even more than the original modified image, also does nothing. In fact, now the only scary thing about that image is how many calories Araki got from eating those donuts.
