The pages on which you place the links have to be minimum PR 3 (not the homepage of the website, but the actual page where the link is placed).
The page where the link is places had to be crawled by Google within last 45 days. If you place a link on a page which has not been crawled by Google for several months, there is probably is something wrong there...
One-way (non-reciprocal) links only are accepted. We do not do link exchange at the moment.
Geographically diverse class C IP addresses. We do not accept more than 1 links from the same C class of IP addresses, as these are probably from pages sitting on the same server or network.
No more than one link from the same domain
No link farms or pages with large number of links on them are accepted ( max. above 50).
Links have to be approved before we process payment
Links should come from theme-related pages in a related industry if
The links cannot be in the form of redirects. They must be in the form shown below with the link in the "href" part of the anchor tag.
Links which do not follow the rules above will not be approved and paid for.
also tell me the prize of pr3,pr4,pr5 and i have 3 projects for u.
we have automated software for checking the link of our site those list of site u will give us.