Question : I have exchanged my site links with 30 websites but not getting any traffic and also not getting any exposure in search engine rankings too. What should I do?
Answer : It totally depend either they really are quality links or not. The page you have linked with having some traffic or not? and the relevancy factor ofcourse. The links you are linked with are relevant with your online business theme otherwise it's just useless to link with non-relevant sites.
As per google webmaster guidelines also, Don't participate in link schemes designed to increase your site's ranking or PageRank. In particular, avoid links to web spammers or "bad neighborhoods" on the web, as your own ranking may be affected adversely by those links.
If you need any more suggestion on link building, just mail me to firstname.lastname@example.org