Knowing the signs and early detection is your best defense against raising an alt upvoter.

Usually the alt ones i see have double comment upvotes to everyone else.

I'm not saying the great comments with upvotes....its the every single comment on every single meme they're on lol

That is the most obvious way to notice yeah. There are others but I don't want to give away the secret so they can learn how to hide it better lol. I like them to think they are getting away with it for a little while lol.

Alt accounts, interesting subject. I guess they can be used for good, bad or other purposes. Some are holier than others I suppose.