This is the correct way to rate beer. Add me on Untapped, but only if you're going to use this scale.

5
The best beer I have ever had.
Drink every time you see it.
Amazing.
One of the best beers I have ever had. Drink every time you see it.
4
Great.
Don't pass this up.
Really Good.
Drink frequently.
3
Good.
Drink again, better than average.
Drinkable.
Better than bad beer, but not good.
2
OK.
Drink sometimes but only if nothing else.
Not Good.
Don't drink unless you have to.
1
Really Bad.
Not something I would want to drink again.
½
Awful.
Never drink.