Absolutely, small tests can make large differences. However, you only have so many "bullets" to shoot at tests with a small audience so you have to be very pic

Absolutely, small tests can make large differences. However, you only have so many "bullets" to shoot at tests with a small audience so you have to be very picky. Sounds like contact inviting is a key viral feature of YesGraph so it makes a lot of sense to optimize there. I'm not anti A/B testing at all, but anecdotally a lot of people I talk to about this stuff fire their test bullets on the wrong things and end up with not much to show for it. A better understanding of psychology goes a long way into intuiting where you may actually be able to see gains, and how to go about achieving them. Sometimes this can be small changes producing large gains, although I have seen large changes produce larger gains more often.