Who said anything about lawsuits?
Defacing a website with something so easy is just childish; c'mon entering HTML in a textbox that doesn't do the filtering. On the other hand if it would have been something innovative and new - that would have been at least wicked... even the redirect to yet another linux website was plain boring. or the messagebox that said "all bases belong to us" - how boring was that...
people who do childish stuff like that shouldn't get our respect! fame to real innovators, blame to stuff like this.