It all depends on where do you send the traffic. Nice topic, Simon
The best traffic comes from traffic-out, Hunter's I second that. If you promote teens, you should buy clicked toplist traffic from Rowan at doggieteens and you'll be happy with the results. His sites have great prod. He wrote a free trade script so you can install it, disable the site sdded and see how much they can send, url is
http://www.slothtrader.com and like I said it's free and even I could install it
I gave a test to traffic-holder too and they are ok in my book.
I have bought traffic to my tgp so I could feed the brand new site and my trades. when you learn the ropes of skimming you don't need more feeder. First click to galleries, very low skim so you don't annoy the surfer and when the site is growing you can always switch to no skim taking all risks.
No experience with elbow grease sorry
