Revenge is an emotional thing... acting out anger.
And it seldom resolves anything. The desire to "get even" seems to be a common human trait.
I confess I have an enemies list but I'm not seeking revenge. It's just a reminder list that some people are super jerks and to be more cautious in the future
I guess I'm angry enough with some people I would take any and every opportunity to let others know what I thought of them, and I have. And that includes certain businesses.
It's their bad karma returning to them and I feel absolutely no remorse in letting others know what I think of those on my enemies list. I feel I'm doing others a service by warning them.
Those people have hurt me with no just cause. They aren't worth any respect and deserve to be treated as the scum of the Earth that they are.