Hi Roger,
Are they asking to be added to the trusted list for your profile? Unless you know them personally, you may not want to do that because that means they will be able to edit your profile. Some new members don't understand that the trusted list is on a profile-by-profile basis, and may ask for access to your personal trusted list thinking that it will get them access to an ancestor further up in the tree. It's always a good idea to message anyone asking for access to ask them why they want it.