
Do not confuse your users: Good labels are important for a better user performance and to increase usability.

Do not confuse your users: Good labels are important for a better user performance and to increase usability.

The chance of someone be blocked by mistake in this screen is very high. Since the distance between the actions of Accept and Block has only a few pixels… a small slip with the mouse and you unintentionally will block someone.
Error prevention
Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action. (From Nielsen’s usability heuristics)
We do not see things as they are. We see things as we are.
Talmud