As has been correctly mentioned, I was a tad cross when I wrote the previous tips for finding a keyholder, not that they are not valid, just that there are additional tips that are possibly more helpful.
Having someone hold your keys is in a way a relationship. Whether it is with a friend, partner or even pro Domme. If you want them to be interested in what you are going through then it is advisable to get to know each other a bit first.
You wouldn’t walk into a bar and ask a female you had just met to hold your keys and expect her to be enthusiastic would you? It is the same online if you are speaking to genuine females.
It is only sensible to to get to know each other a little, find out interests and see if you are going to get on in ways that are not just chastity related.
If you treat a female as if they are just there to let you get your kink on, then it stands to reason that they will not be interested in being involved with you in any capacity. Why not get to know them a little, chat to them in forums, chatrooms etc. Look at their interactions with others, see if they are the kind of lady you would like to become involved with.
If you are not interested in getting to know a female then you are looking at a pro domme or the postman to be your keyholder.
When you start speaking to a prospective keyholder as a real person with their own life and likes then you will have a much better chance of her being amenable to holding your keys. Going on a site, saying hi and asking if they want a sub, is not really the best way to go. Check out their profile, read their posts, get to know something about them and if you are still interested then approach them as a person, not as a key deposit store.
I hope this is helpful and if you have any questions please feel free to put them on the forum.