My only relationship to duck duck go is as a user. nothing else. second question -> I know full well my words could have absolutely no effect in persuading you, as search is such a personal and habitual experience. So instead I resort to simply saying; use it for a week and let the site speak for itself. Pardon my deliberate canny dodge.

anyway after a bit of a rant here is what i consider the most powerful feature of ddg: http://news.ycombinator.com/item?id=1209619