Try to optimize your site for search engines and start building links which relevant keywords. After some time, you should be getting yourself targeted traffic. Read up some resources on SEO out there.
Either you pay for it whether that be buying targeted traffic or ppc. Or you borrow it ... joint ventures or you get organic traffic ( search engines) through keyword friendly titles.
when you talk about visitor you talk about 2 type of visitor good visitor and bad visitor good visitor : come from search engine, when search keyword there is in your web site bad keyword : come from autovisitor web site, visitor exchange, bot visitor, auto proxy visitor, search engine cloaking, or add porn video to youtube and other sharing web site and add your web site to these video but there is an equation 7000 bad visitor = 7 good visitor. to boost your alexa ranking you can use solution to invite bad visitors, but to sell a poroduct you must search a good visitors
Mobile phone traffic (and m-commerce) in the U.S. are very small right now. I am not sure where you are at, but look at others who have been successful in this area - what did they do? Then, just duplicate their success.
I hope you didn't overexert yourself with that post of yours, saqi. I know typing the word "question" out can be a killer.