People search for a note or coin and sometimes cannot find it. With the brevity of titles it is very easy to not find something.
So in some cases the member takes the time to upload a new entry. But then the referee (who values his/her own time) promptly rejects the member's (sometimes hour of) work on the new entry and only leaves a brief comment "it already exists." Sometimes, albeit seldom, the referee gives a link ...
It should be mandatory protocol for the referee to provide a link PRIOR to deleting member work. Fastest way to ensure a member will stop contributing is to cancel their efforts without adequate explanation or respect given.
If the duplicate page contains missing information, the referee should move that information into the existing entry BEFORE DELETING ANYTHING. This is how Numista gets better. I understand not wanting duplicates, but intentionally losing missing information keeps things stagnant and is NOT better. Respect is important. Show respect by accepting and adding all useful information into the catalog instead of hitting the easy REJECTION button because you are so busy.
Never assume people did not search. Never give a condescending comment.
