He's identifying himself as fitting into a certain culture of organization. Some of the comments here are a perfect example! Anyone that criticizes this as "inefficient" or that it's "making getting the details difficult" is missing the point. He doesn't want a soul-dead HR minion to find his details.

a) making a statement and getting eyeballs is not always a good thing—a lot depends what kind of statement it is and how exactly eyeballs were attracted.

b) understanding when you shouldn't do something just because you can is a very big plus for a creative person. Alas, this resume shows the extreme lack of it.