I've been using Link-vault for some time now and my site has reached #1 and left the others in the dust. This combined with fresh news feeds is a sure way to reach you goals. I haven't used DP's system, but I'm sure this works just as well.
link-vault.com is the url. Do read the google webmaster quality guidelines before proceeding further. I think they downgrade sites participating in link exchange programs.
yes, add a .com Some say it doesn't work, but my sig is proof that if you do it right, you can get to the top. Just remember, it takes time. If you would like to buy a backlink or two, let me know. It must be in the financial area of Google will not give you the credit you should get. PM if you would like more information.