No one else can see my listing- why?

If a listing is only visible to the list agent (no other users on Matrix can find the listing) it is because the listing is set as Incoming/Incomplete- it needs to be changed to Active. 

When a listing is INC, only the list agent and anyone within the chain of ownership (Broker, office manager, office admins) can see the listing. 

Other users on the MLS will not see it until it is set to Active.