Defacing Websites

Following from the DNS hack of MSN yesterday, which has been fixed thank goodness, my charming ex-flatmate (check him out Josh Waihi) kindly pointed out that its actually easier to deface NZ websites than we seem to be aware of. Back in March I posted a blog about Stuff's new website and their URL's which can be re-seen here and now Josh has brought to my attention a lovely little defacing of NZ Herald:
No one is safe.

My question is who on earth has enough time to do this sort of thing??