You open what looks like a bill, but it's just junk mail. You click through a donation process too fast, and they turn your one-time donation into a monthly contribution. A snack's packaging makes it look bigger; an opinion poll is obviously one-sided; when you copy-paste a line from an article, the site adds a "read more" link for your "convenience." Don't express your impotent rage alone. Take it to Reddit's /r/assholedesign, a place to expose and discuss evil design tricks.