Good article about a frequently misunderstood topic.
One thing that I think comes through particularly clearly in this is the Catholic concept of the saints (and not only the "officially" canonized) and the souls in Purgatory as being still part of the community of believers, in their new and different way after death.
VERY frequently misunderstood. Any time the archbishop gives a blessing with a plenary indulgence attached, he explains the conditions. We should all know the conditions.