The main site, www.dbocom.com, may not seem to have very much on it at the moment; but it holds a few secrets. Seven of them to be exact. All 7 dragonballs can be found hidden somewhere on the page and there might be a little reward for the first person who can find them all. ;)
Nice job, first post in this thread and you already got em all. Makes it look easy :P
Your reward is that I'll make a Netmarble account for you.
I edited up your post a bit so it wont spoil the fun for anyone else that goes looking for them, there won't be any rewards for any other Dragonball hunters though.