He joined in the Bounty with another one details who didn't join in that YouTube Campaign.
Or, they made mistake and joined campaign using ethereum address which belongs to their alt account.
Anyway, there are two accounts with that address:
My new address : 0xf7115122Ab331C9d3490f0F453e79Da158c77400
Campaign: YouTube, Blog posts, Articles Bounty
Bitcointalk username: Dobrii
ETH : 0xf7115122Ab331C9d3490f0F453e79Da158c77400
Ranked up alt account to junior member:
And another merit abuse:
http://archive.is/l2YrMOf course, ICO Fanclub posted this address
here :
ETH : 0xd0E00834023561e54C9b3f246D4Be591a49E87d9
...the same
address :
Proof of joined post
ETH address: 0xd0E00834023561e54C9b3f246D4Be591a49E87d9
Maybe there are more alts