I think some of those BTC is lunamine's, but that wallet in total is some online wallet service that combines all the user's BTC into one wallet.
No, that would not be very consistent with the fact that the wallet activity begins on august 1st and ends on august 11st, dates which are consistent with lunamine's activity, and would be incompatible with the hypothesis of this wallet belonging to someone else.
My own hypothesis is, that on august 1st, lunamine decided to consolidate their wallets into one that they created with MultiBit, which is a powerful wallet soft (and deserves the 0.5 btc donation they made).
The particular wallet ID above might just be the "savings" wallet of MultiBit, while some other amount may have been used to buy hardware and/or hosting. If someone can trace their own initial lunamine payment to another wallet beginning on august 1st, that would be interesting to compare.
Personally, I'm still not convinced lunamine is a scammer, I'm willing to wait for more information.
I would highly appreciate that lunamine answers my PM, and gives some explanation about the situation , on this thread. So,
lunamine, since you are probably reading this, have some courage and say whatever happened. If you are victim of some "blackmail", then please do know that the best answer to blackmail is to make the information public : blackmail then loses all leverage. This would be much better than to let your reputation, and people's willingness to grant you the benefit of doubt, go to shambles.