Buying votes doesn't pay.
Check my one and only biggest upvote :
I sent 40 SBD to upvote.
I received something like 85 SBD worth upvote.
%25 is on curation, left is approximately 64 SBD.
Divide by %50 
SBD receival : 32 SBD
Steem receival : 32/3,6 -->approximately 8,6 SP

This is almost break-even even a bit loss.
Each user that uses bots gives %25 curation and powers up automatically.
So part of their SBD is turned to SP.

I am not defending bots neither against them.
I made analysis on them for some time.
I see them as an ads system.

I guess people using bots see this also.

Can we think of an other method of curation or promotion?
I guess we can...This is something people are working on.

When a more efficient system is implemented, bot business will finish by itself.


FD.