Focusing on acquiring new members is a key part of creating and maintaining a successful membership site. But perhaps even more important is keeping existing members happy. For starters, it’s probably easier to keep a member than find a new one. Then there’s the invaluable word-of-mouth marketing happy members contribute, not to mention the damage to your reputation unhappy members can do.
A checklist is a type of job aid used to reduce failure by compensating for potential limits of human memory and attention. It helps to ensure consistency and completeness in carrying out a task. A basic example is the "to do list". A more advanced checklist would be a schedule, which lays out tasks to be done according to time of day or other factors. A primary task in checklist is documentation of the task and auditing against the documentation.