You can reference Arcblock Spreadsheet: What the hell??? A Signature Campaign with more than 1000 participants, the first ever in bitcointalk. And i bet you can find many Fake (Ghost) account easy.
https://docs.google.com/spreadsheets/d/1zrrICT4h5jJKgcBINW8UK0-RFZbhQ4oKHBfLbWd2oLs/edit#gid=2085295745
Recently is the second bounty campaign from Cybermile (run by Krypital)
We easily find many fake accounts but still approved and counted (maximum) stakes. While many real other bounty hunters get zero. They was STOLEN token form Project they managed, by TAKING form real bounty hunter, who received the reward is not worth the effort.
Many fake accounts and received real token...
Another was reported them and find the wallet address which they transfer money to:
https://bitcointalksearch.org/topic/m.35847956
I think bigdude should change title to "Bounty Managers of Krypital Group - Cheater"