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Those accounts are known as voting bots here on steemit. Not everyone here on steemit likes the idea of bots upvoting steemit post...But these pay for vote bots have some great benefits like profits and exposure to your post :D

Example: If you send lets say 2SBD to @booster, you will receive an upvote from the bot,aswell as from a few other users front running @booster(I recommend checking out their blogs to better understand) .This also give a boost to your posts exposure and might bring in more votes and comments from the community...All depending on the post quality and originality itself.

@gingerninja, do I have to pay, transfer anything or delegate something for my
Steemvoter account to be able to work?
:confused:

i think you just have to create a new account from scratch

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