WebmasterQuery

Completely depends on your budget, but I'd say Fiverr is probably a decent place to start.  If your just looking for bulk backlinks to your web 2.0 sites then this gig is pretty good: http://fiverr.com/scrapebox_/creat...-using-scrapebox

I agree with the others. Have a look around the web, ask more questions and then make an educated guess. I have also heard of a website that you can get backlinks from, I think it is a backlink builder actually called social monkee. I have no direct experience with it though, so in all honesty I cannot recommend it but I would recommend checking it out nonetheless!