I quite do not understand. Tagging is important for visibility and rewards, but I am not tagging base on milking the cow that way. I am tagging with respect to the content of the post.
I guess you are asking about the 50% / 50%. That is a different animal and it appears right below the comment you are making: It gives you the option to upvote yourself with 50/50 split and doing so, will generate some SBD which has a ratio of 4 to 1 steem.
You can see that here at this level I self Upvoted myself. But I will not get full 100%. You get 75%, and I only 75% of value. But in my case, that 25% will be in SBD because I choose 50/50 split.