Thank you very much for your answer. I agree 100% with you regarding the boosters. I have set some weeks ago a thight ruleset for myself as follows:

• I dont use any boosters
• I dont lend my SP to boosters
• I dont vote my own posts (exept main articles)

I have published this here (written in german):

https://steemit.com/deutsch/@freiheit50/booster-ohne-mich

I give all my voting power to other authors.
Regarding the upvote from @gentlebot above I dont know where it came from. I didnt order it.

So we both are fully in line. That great. Have a nice day.