Hello!!! Guys I don't catch it at all. Someone said to me that PR may be shared beetwen us (backward links...). How does it happen? Thank you...
PR is based on the number of backlinks you have and the PR of those sites linking to you. so when a site with PR links to you, it not only gives you a backlink but also passes some of its PR juice. how much PR a site passes depends on whats the site PR and how many ooutgoing links that site has.
You need to learn more about SEO. Read some useful articles, i will help you in SEO. Try this : http://www.ezbusinessneeds.com/web-book.php
Webmasters tend to charge for links (PR) though Check out this link: http://www.seomoz.org/article/beginners-guide-to-search-engine-optimization