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Are you referencing people purchase more SP with new money rather then use the SP they have already accumulated?

Nobody is going to purchase more SP anonymously at $4.50 a pop just to flag haejin with. That's extremely costly. However if they would like to do that they could very simply make a new Steemit account and purchase SP and then delegate or flag with it.

I however don't think that majority of people have that deep of pockets or they would have already purchased SP for their own personal account growth!

To be honest, I don't know whole process of delegation because I never delegated or receive delegation. Just thought it can be done anonymously. Thanks for clarifying.

Delegating is not too hard. You can always get the sp back, but that takes a week to prevent voting with it twice. Its not anonymous, but I'll risk it

You'd be better off simply downvoting him yourself. It retains an element of decentralization.

He doesn't take kindly to that

No. But nor will he to a bot doing exactly the same thing...