I've had a look. It seems to function in Firefox (a little slow though) but issues arise when using Google Chrome, the navigation isnt reactive, the pages take a very long time to load and a large white sqaure occasionally appears in the top left hand corner of the screen.
This is built on tumblr right? It's definitely not anything to do with wp-config as that would mean its built on Wordpress, which it most definitely is not. Site seems to work perfectly for me though, check it X all browsers including a VM running IE here.
The only reason I would say it is not working for others would be something to do with DNS not resolving properly. Just ran a check on that also and seems OK. Are you based in the UK That go-Daddy hosting and Park wont be doing you any good, they seriously are a overselling garbage host and US based of course.