Trying to make this as helpful as I can:
You are making decisions too fast, not taking the time to really understand their entire implications. Example: you read part of a comment in a discussion/post in which you are involved and flag it before being sure that the post you have flagged was not actually on your side. We both know that this happened before, and it may happen again.
You take some aggressive approach. Example: Instead of motivating people to create good content which shows effort and brings value to the platform, you focus on flagging people who do not produce valuable content. What is wrong with this approach is the fact that when you are flagging, you make sure that the person who has been flagged does not take so much from the reward pool, but the other reward pool rapists will have increased profits now, taking a bigger part of the pie.
You are powering down, giving a pretty bad example to the other steemians, but I can't disagree with this, because I don't know you and your reasons behind this. You may not believe in the value of Steem or you may just be in a need of money.
You do not take the time to give complete/proper answers to people in the comment section of your posts that are asking you pertinent questions (although I have to admit that this has improved over the time and that you may be too busy to do this).
It is still a little bit shady for me, as for many other new users who are you, why have you got to minus 18 (or below?) reputation and what principles are you trying to defend. On the other side, your reputation is increasing and I am sure that it will become positive in a very short time because of the logarithmic scale.
I hope you see that I am just trying to point out some things which can be improved and ask you for your imput about them.
It will be nice to see what vision do you have about Steem and also why should people vote for you. Work on the positive logic :)
Have a nice day!
Upvoted for visibility.
From what I've read, @ned is the reason he got to -18 rep.
I heard that too, but a post describing the whole story and the reasons behind it would definitely remove the mister behind it and increase new users confidence in him.