Is there a module that allows people to suggest additions to a list,
then site manager/owner approved additions to the list?

Site name | URL | Notes

As an example.

Jason Nunnelley
Zarfo: http://www.zarfo.com/@jasonhacks
Twitter: https://twitter.com/jasonhacks

CEO dosIQ, Inc.
Member Tekany, LLC
COO Zarfo, LTD
256.962.0290