This is a shorter tip than usual, but it can come in handy in a few different situations.
If you are trying to keep track of a player who may change their name, blocking them is your best option.
There are a couple of reasons an enemy might change their name:
Go to their player profile > manage > block user
Go to more > blocked users
Have every new member do an introduction and mark that introduction as a favorite so the mail doesn't get deleted. Then, if the need ever arises, you can go back through your favorites and block them.
The introduction isn't solely because you think everyone's out to get you, it's a great team building exercise. However, a leader always tries to remain a couple steps ahead.
Use a farm account in your alliance to track sketchy members that you still need to talk to on a regular basis. "Keep you friends close and your enemies closer."
Contributed by R ebe L