OK, so what are those features? Would iPad running Windows 7 be a proper computer? Why? Why not? Is PS3 running Linux a proper computer? Why? Why not? What does the iPad need in order to be considered a computer? An USB-port? Why? Mac OS X? Why?
Well, that was the purpose of the smiley - There will NEVER be agreement on what exactly separates a laptop, nettop, ultraportable, tablet, media pad, handheld, cell phone et cetera. Whoever does the reporting will choose the definition that suits their agenda, or less conspiratorically, what is appropriate given the subject they are reporting on.