Modacta is designed to be constantly kept up to date while preventing information overload.
Articles remain 4 days since the last action on them.
For example in the Sort Queue articles older than 4 days will automatically be removed.
However, if a user moves an article from the Sort Queue to the Skim Queue or Share Queue when the article is 4 days old, it will reset to an additional 4 days.
In other words an article will have a 4 day life span while in a Queue. If an article is moved to the Library (available on paid plans) it will never be removed.