So do you need to send your actual coins to be involved in the masternodes, or are they kept in your own private address?
Just interested from a security perspective.
Heya, unfortunately as with all shared MN services, our service is based on trust. To set up an MN we need to have all the coins in a single wallet which means users must send their coins to us.
Trust is earned and so far I believe we have done well. If you have discord I would recommend joining our server and saying hi.

Yea I probably don't have enough coins to make it work! Even for a shared service.
You could have some other public listed information to show the coins you are holding from other people. For example a register so people can see your history of paying out and take the right amount of fees, that you provide coins back when asked, that kind of thing.