I agree, I greatly prefer $4/8 but my wife prefers the smaller $3/6. $3/6 is a fun game, especially if you've been playing a bigger game all day and just want to kick back and have a good time donking it up.
Thanks fellas for the explanation of the $4/8 with $1/2 blinds. So I guess I was right....folding from the blinds is a like a surrender, compared to reg. $4/8. The small blinds seem like a way to encourage the tighter players to fold. If a tight player has junk, he's going to fold in a limped pot if he has complete junk. In a normal blind game, that player is going to see alot more flops and have alot more draws that will induce him to call.
I might be wrong, but it seems like changing the blinds by that small amount could make for smaller pots alot of the time.