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- Well, you should search it for your own good
This is not a financial advise. Do your own research, and invest only what you can afford to lose.
I think that buying Plankton Token (PLKN) is profitable (at least for redfish/plankton and for minnow users), because they are not only giving upvotes to your blog posts, but they are giving daily profit shares for Plankton Token (PLKN) holders, so this is one of my favorite tokens. Of course, if you are not a redfish/plankton or a minnow, then this may looks like a joke to you, but for small Steem accounts this could be helpful/useful in the long term.
QuratorToken (Q) is similar, but they are not giving upvotes, only the daily profit share. I am holding a small amount from both of these tokens.
The answer to this question is all depending on how much Steem Power and money you have, and what are your expectations about your investments.