Hi.
I would be careful auto upvoting all the comments. Many of these accounts are comment spammers, some already blacklisted by steemcleaners.
They spam on posts by curators that always upvote the comments to fish for rewards and/or get destroyed reputation back.
Some examples of accounts blacklistes for various abuses that comment here are rahul72, ratul8940, rik432, martin897 etc. And many accounts with similar names to these that contain generic numbers.
Also, any account with reputation lower than 25 is likley to have been flagged by us for some abuse too.
P.S. Please don't upvote my comment.