if you are looking for a thank you for holding a door open, then you are doing it for the wrong reason....
THAT said...for a couple three females, I always hold the door from the outside and once they pass i go through the door, that's the way I expect it. I take public transportation to work and one of the transportation centers is at the king of prussia mall, so often times a group of us get off the bus and maybe i lead the way to the mall entrance door, often times holding the door open on the outside just isn't a viable option, so i push the door open and hold it ajar for the next person to enter and keep the flow going....i cannot tell you how many times i do that and people pass through the door and do not do the same thing....that 'get's my goat' every single time.
I do my best to act 'the gentleman', but there are too many people in this world with zero sense of social protocol(perhaps i expect too much or am off base with my understanding of social graces/manners).
I get annoyed too easily by senseless things....