Today I found an interesting and quick analysis of data shall we say, "efficiency" over the last month SteemVP - http://steemvp.com created by @roelandp
Allows you to quickly get acquainted with such data as: how many posts you have written, how many received votes, how many of them were unique to this month and how much you have earned this!
Then the pie chart you see who you have brought payment, and the next line shows more and more who just voted for you.
Towards the end of the detailed table of who gave how many votes and how much is in SBD $ equivalent payments.