In his last Steemit goals update 
Voting distribution
Based on steemreports.com you can get insight in the upvotes you get for a certaing amount of time. Since it now is the end of October, I decided to take the whole month into account (which makes calculating also a bit easier). Below you can see two different ways to look at the amount of upvotes I got. The above one indicates the value of the upvotes that I got on my posts. The second one indicates the value of all upvotes (so also on comments). To be complete, I used the second one to calculate my total rewards.
Rewards for posts
Source
Total rewards (posts + comments)
Source
Author rewards
The second important thing to take into account is the total amount of author rewards that I got during this month. Steemworld.org helps here, since you can see the rewards of the last 30 days - this is why I chose a month earlier in this post... - on your account page there (see below). One disadvantage is that rewards are always paid out 7 days after you author a post. That means that the reward data from Steemworld are 7 days behind the Steemreports data about upvotes. To keep the calculation easy, I assume that the amount of upvotes by the different services are comparable for both periods. Since I post 4 to 5 times a week nearly all weeks, that should be pretty close to the reality.
Accorting to the Steemworld data, I got 21.32 STEEM in author rewards last month. This is twice the amount of SP rewards (10.66), since I always choose 50-50 (SP-SBD) payout for my posts.
Results
In the table below you can find the results of the calculation for this month. I only take the services into account that are among the five biggest contributors/upvoters.
| Service | Share | STEEM |
|---|---|---|
 | 50.1 % | 10.68 |
 | 13.9 % | 2.96 |
 | 11.3 % | 2.41 |
 | 3.7 % | 0.79 |
 | 2.9 % | 0.62 |
It can be seen that SBI is still the a very big contributor to my author rewards. I own quite a lot of shares in this program and have invested quite some STEEM to buy them. If you would look at the total amount of STEEM I used to buy the shares, I'm still in negative territory here (but that will change in the near future as long as I stay active).
It is interesting to compare the number two and three on the list,
upvotes that are worth (slightly) more from Steem-UA, so that one is just over 100% more profitable now. However, I've seen the Steem-UA upvotes go down in the course of this month, so this might change in the coming weeks and months.
Looking forward
I think it is quite informing to look at your portfolio like this once every while, so I think I'm going to make this a monthly exercise. I can then see whether certain services become less (or more) profitable and change my strategy according to that.
I'm curious to know whether you also do these kind of analyses and, if so, whether or not you changed your strategy based on that. Besides that, I like to hear from you when you think there are any flaws in my calculation and/or whether you would like some more or other information as well.
Just let me know in the comments below!