Bear in mind that "resting bitch-face" is a thing, so even your average human will sometimes see negativity where none actually exists!
This is the only part of that paragraph that makes sense - people seeing something in me that doesn't actually exist. I haven't had a clue what it was until recently, and I can still be sold on alternatives despite my recent discovery.
How do you usually dress when you visit the supermarket? Do you often leave the house without taking care of personal grooming and hygene?
My hygiene and grooming is rigorous, while plain - designed to fade into the scenery. I dress reasonably casual - no different than what you'd see programmers wear at the office. No worse than what others wear at the supermarket, and better than some.
How much thought have you given to precisely why you're getting all this negative attention? You come across as having not given this much thought beyond "people hate me for some reason."
Then I am a complete failure at communication - I spend significant hours a week wondering why people hate me, ever since grade school. There is no logic in it.
You see yourself as "The Other;" what is the source of that Otherness?
I don't see me as "the Other" - other people see me as the Ur-Other; every human being sees me like bigots see minorites. They see me as a living, breathing example of something that tries to hurdle the Uncanny Valley and fails. Imagine an example from the Uncanny Valley bumping into you at the store and saying, "excuse me" - that's my life in a nutshell.
I just want to be treated as an equal, but human beings sense this and try their damnedest to make sure that never happens.
(children and teenagers notwithstanding)
This is the key - most human beings are stuck in the pre-adult phase of their development. Simply put, the majority of human beings have not and will never grow up. This fact doesn't just explain my problems, it explains damn near every problem society has.
1. That's not how this works. People who are creepy are generally always creepy. I felt no "effect" upon viewing this thread. If anything, I saw someone in pain and wanted to help them.
Looking at this scientifically, I can only really tell you what I observe. Most people react very harshly to my presence based on some unknown trigger. People who get to know me well enough "get used" to me and treat me normally. That's what I know for sure - everything else is speculation. I have no idea what goes on in their brains.
2. If this little conversation is more than you get from most people, then I suspect part of your problem is that you don't talk to enough people to have your negative illusions dispelled. If you wallow in self-pity and disillusionment you're never going to see anything that contradicts your negative viewpoint of humanity. If you've been that isolated since your teenage years, that would explain why you apparently think everyone acts like asshole teenagers.
When you do have income again, I strongly suggest looking into therapy, because you seem like you are in a lot of emotional pain and it looks to me like a lot of it is self-inflicted. In the meantime, I have an assignment for you, since you have some spare time - go to a busy coffee shop. Bring a book. Order a coffee. Find yourself a nice chair, and sit there for an hour, discreetly (don't stare at people!) paying attention to your environment. Use the book to hide the fact that you're actually looking around. Watch how human beings interact with one another, and provided you haven't chosen a coffeeshop that is in an utter shithole part of town, I have faith that you'll see no hair-line triggers and no bestial squabbling. Pay attention to their body language and compare it with your own - people without much social experience tend to have odd, off-putting body language. Everything you've said so far has strengthened the off-putting body language/presentation hypothesis.
I am not about to risk my neck for your little experiment. When we can gamble your life to prove your point, send me an e-mail.
Also, I observe humanity a lot - I have to see trouble coming from a mile away to make sure I can deal with them with the few resources I have. Do you know what I see? I see Pulse Shootings and campus pepper-sprayings and church bombings. I see Trayvon Martin and Brandon Teena and Matthew Shepard and know for a fact that I am one butterfly-wing-flap away from suffering the same fate. I know what people are capable of - and don't me garbage about these events are "outliers" or some other story - this happens too often even if those were the only events of their kind.
As long as innocent people are being blown up or shot or beaten to death, I will fear human beings - and rightly so.
I don't think your employers will be able to find this unless you explicitly and publically provided a link between your GDnet account name and your real name or contact details.
I have seen links between this handle and my name on the internet before - I believe I have scrubbed them all, but I can't be sure. Regardless, if someone wants to find a connection between the two, they will find it - hell, I know how to write that spider myself.