There are a lot of those too, but usually they stay put and yawn quietly as they wait for their guy. The touts gary_nj is referring to, on the other hand, do their best to shove clipboards in your face, yell "Taxi meeester!" and get you into their limo/illegal cab. I used to hate them with a vengeance, until I figured that a forceful Mai ao khrrrrrrap gets them to shut up.