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Won't matter for the new accounts to come as they will get RCs only

I thought they were supposed to stop giving out 20 SP or whatever it is to new accounts now that RC exists, but I guess pulling the delegations makes sense, although it would probably be a full-time job.
Maybe they can just have it automatic, if you are voting at less than 25% (something noobs with 20SP probably shouldn't be doing) or do a single downvote you lost it.

  • Make more downvotes then upvotes.
  • Make downvotes but haven't made a posting for 7 days.

There are so many ways dust accounts selected. And why not cut there SP and RC delegation? Force the owner to buy steem in order to reactivate the account?

I think getting to tough on it immediately is not a problem. Cutting the SP delegation is a great idea. Also making Downvotes cost a lot more RC is also a good idea. Make it difficult for accounts with low SP to do this sort of thing. Right now it's too difficult to figure out who is doing it.