I do not understand what you mean by "Agriculture maybe?" I have only one account for almost a year, the ones shown here are @roseri (my sister) @ismael (my brother in law) @etnique (family) .. In my family, I am in charge of changing the SBD or STEEM to the currency local. You can see in the transactions that the same amount of STEEM that I transferred was the same as that transferred to the service @Change an account of @cervantes. In the same way, the account of @mlaura is a friend who did him the favor.
And the transfer to @etnique has nothing to do with @minnowbooster.
If you are so kind, you can verify each of the accounts that you consider suspicious.
I'm even using the leasing service they offer.
By the way, good idea of the catcha system they implemented. I hope to continue using the service.
I can say this can happen, and not necessarily suspicious.
I'me too, in the charge of about 4 users money when they want to turn them into local currency (My brother, two sisters and a friend of family who is also in charge of his brother.) Because they aren't technical they tell me whenever they want to use SBD for something and sometimes I find it easier to use them through my own account.
Don't know if that is considered farming.
By the way @osmerj: Farming and Not Agriculture is the when you make more than one account and use each one of them to get money then put all the money in one account to cashout. Like what you did.