Some link building strategies: 1) Set Up a blog and keep it updated and with plenty of links to your sites 2) Reciprocal - Keep it to less than 20 total and try and do it with relevant sites only 3) SMO - This will build bulk fast 4) Paid Directories - This will give you some decent PR links 5) Wirte Articles and allow other to publish them as long as it includes a link back to your site 6) Forum signatures and helpful comments 7) Set up a Google groups or Yahoo groups site 8) Ask friends and family for a link Thanks!
I don't think this is advisable. it's better to have natural links specially from relevant, authority and quality sites than paid ones.