Ah, your position is still at "Newbie". Once you make 25 posts, you get ranked up to a "Jr. Member" and that is when the option shows itself: right underneath someone's "Floof-O-Meter" is an underlined word, "Nuzzle". You click that and ~poof~. You gave a floof to that person. c:
As for getting floofs... when someone sees you as being helpful towards others as well as doing some hard work, they will reward you with a floof. ~ Cx