Quote Originally Posted by mattp169 View Post
NO either is used when 2 things are involved
neither is used when more than 2
Either is used to place 2 things as multiple options. Ex: We are going to either vegas or reno. Either she quits or I do.
Neither is used to draw a comparison between two items who don't do something. Ex: Vegas doesn't cheat and neither does Tynon. Neither Vegas nor Tynon cheat.

There is no differentiation based on number as both require only 2 objects. The can be extended to include 3+, however, not often.