лапидарное мемо, которое я сохранил себе на скрижали:

It’s not illegal to have several accounts.
It’s not illegal to post often either.
It might be frowned upon but not illegal and not straight abuse.
The fact that user is voting for himself might also be frowned upon but again, not straight up abuse. A lot of people self vote.

создать и юзать новый аккаунт помож помочь (например, О. так и сделала).