Hello i just lauchned my new site, its a big sites with around 100 000 pages. Now i want to rank all the subpages for longtail keywords. My question is what is the best way to do this, should i build links to the main page or to the subpages and what kind of links i should build / buy. I have 500 USD for linkbuilding and i can code scripts for web2.0 posts etc. Hope u guys have some ideas for me!