[thafman]

I wouldn't consider most of the actions listed "unethical" per-se, some actions like; "creating a ton of pages with keywords to get long tail google traffic" are legitimate, while "buying an email list to spam people" can be downright illegal.

[vaksel]

people have different levels of what they consider unethical.

as far as keyword stuffing...google considers that blackhat so you can get banned when they find you