I see that many india companies offer one-way-link with PR. I wish to understand how they do this. I wish to understand what is softwares/tools that they are using in order to find the pages where they will place the links. I show some examples of pages where they place the links : http://www.magdalyns.com/travel/ http://www.parisinsites.com/linksworldwide.html
There are tons of "autosubmitter" type software out there, some paid, some free. Since the sites you posted are actually soliciting links, they just point their software in that direction and autofill the signup pages.
Folks like that typically churn out networks of crap websites and place them there. Its not hard if they own the sites. It is still a link farm of sorts and a complete waste of time. This is common BST scam. Typically you see this sort of thing on blogs they created in 5 minutes on dropped domains. Nigel
All these companies own so many websites (=link farm), they post links only there, so that they control it... finally if you stop to pay, they will probably retire the links... and you'll have wasted your money!
Beware of the auto submitter type link posters. The best link building procedure is doing it manually.
dear it will give you the benefit till you are paying to the business after that your link will be retire and will pay you nothing.