I think sock puppets that reply with text are a lot persuasive than just "likes".

However, I might be not typical in that I don't look at vote scores very often.

I've seen them used to dogpile in arguments (harder to do since you need to keep writing styles distinct), game votes in forum games or quests, etc. And of course you don't need to use multiple at once if you just switch to a sock puppet every time you're suspended or banned.