I don't now this method is going in all our the world or not but in Pakistan this method is very active and beneficial. Actually it is purely related to back link, in Pakistan mostly websites, pays peoples like me like you like any one else, 2 Rupees for one link, these guys search on forum and post threads (not spaming) and leave a link there. for example "If you have An Online Banking website" then they create a thread like this. Now a days online banking is very popular and it saves your time today I 'm shearing a website to you friends and i think it will be very useful for you. Please visit. www.example.com Regards. These post the thread on those websites which are related to website.