Spammers get blacklisted, thankers may or may not get blacklisted.
You may however, if you wish to comment, tell me of a better word/phrase than thankers because I don't think it's a real word.
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Thanker is actually a real word.
https://www.merriam-webster.com/dictionary/thanker (look right under definition 2)
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Well I'll be darned.
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Arigato!
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