How close does he let you get?
That picture wasn't taken from nearly as close as it looked. It's a small piece of a larger image—the original is 1936 x 2592 and the smaller piece I posted is 1024 x 768. He was probably about halfway across the deck from the kitchen door when I took that picture.
Why feed a wild animal? It's not really helpful to them in the long run.
Some of the neighbors would throw them peanuts and such regardless of what I do. The biggest thing I'm conscious of is that when our relatives from Miami visit we not let their kids feed the squirrel because both kids are under 10 years old and would likely mistake the squirrel's seemingly friendly demeanor for tameness. I must say, though, that I became a bit concerned when I went outside last night to put two Cornish game hens on the grill and I suddenly realized a squirrel was on the deck table—while I don't think he'd go near a hot grill, I don't particularly want to find out the hard way that I'm wrong about that assumption!