Why would someone pick hat full of sky as domain name?

Because Hat Full of Sky is the name of one of my favourite books by Terry Pratchett.

The blurb from amazon.co.uk:
Eleven-year-old Tiffany Aching wants to be a real witch. But a real witch doesn't casually step out of her body, leaving it empty. Tiffany does - and there's something just waiting for a handy body to take over. Something ancient and horrible, which can't die. Now Tiffany's got to learn to be a real witch really quickly, with the help of arch-witch Mistress Weatherwax and the truly amazing Miss Level. Oh, yes. And the Nac Mac Feegle - the rowdiest, toughest, smelliest bunch of fairies ever to be thrown out of Fairyland for being drunk at two in the afternoon. They'll fight anything...

As for me...
I'm in my 30s, gainfully employed at a university in Melbourne doing IT (web) support. I have two expensive pieces of paper from different universities. One is a Bachelor of Arts from La Trobe University in Bendigo which I received in 1996. The other is a Bachelor of Arts (Multimedia) from Victoria University which was presented to me in 2003.

Outside work hours, I pursue the usual nerdy hobbies, such as spending far too much time on my computer making graphical objects, browsing the internet, reading, obsessing over my comic book collection, taking photos, frequenting cinemas and lamenting the axing of all Joss Whedon’s TV shows.

I collect books, DVDs, art and comic books. I'm also a very passionate rugby union supporter and can often be found grumbling about the lack of free-to-air TV coverage in Victoria.

If you want to know what I've been up to, you can read my blog, little words.