How do you manage multiple moderators checking the same forum?

[Spinball]

Originally Posted by Alfa1

But what if tabs are accidentally closed? A checking system will cause the threads not to be reviewed.

What if the web server is hit by a meteorite?
There are always circumstances which can scupper your best efforts. However, I can't currently think of a better solution.
Lynne's solution is great when there is content in the posts which needs, and can be verified.
But in most forums, where the content posted is 99.9% of the time opinion, then IMO what is needed is a system for checking that each post does not break the rules. Going beyond that would not be appropriate for our forums.