I have these tools on VPS server - Scrapebox, Senuke, Article Marketing Robot, Xrumer, The Best Spinner and i want to use them to rank for a competitive keyword. I want to create web 2.0 sites with Senuke or Article Marketing Robot and blast them with Scrapebox and Xrumer but i never did something like this before so i have some questions. How many web 2.0 sites i have to build? On how many blogs i have to blast them - 10 000, 50 000, 100 000? On each web 2.0 site do i have to use a different keyword? Like if i want to rank for "waight loss" , do i have to use "weight loss fast", "weight loss easy", "one week weight loss"? Any help will be highly appreciated. Thanks!