I don't like raise sizes of less than 3BB, though they can effective. If anyone's paying attention, the price is too good. When I see the small open-raise, I'm doubling (or more) my 3bet range and increasing my calling range a ton.

But even at 50nl, most regs don't adjust to the smaller raise sizes, so they work OK. I've misclicked and min-opened and managed to steal the blinds from the BTN a couple times. Jeez, what can the BB fold getting 3.5 to 1?