Beta tester is just a title. You can be beta tester with 2 stars (but I guess it's rarely going happens).
I got Beta Tester status when I was a Full Member and it gave me 5 stars. Becoming a Beta Tester brings you up to 5 stars, no matter how many you had beforehand.
It's a usergroup that has access to another part of the board, I think that's more than just a title.
Hmmmp,wait,Beta tester=5 starts
Hero Member=5 starts
So,we are arleary beta tester so lets srs puppy
Yeah, no. Beta Testers have to be appointed by admins, if every Hero Member was a Beta Tester, we wouldn't have needed this thread.