Link Building is where a company looked for a website that had a highest ranked in advertising. Here company post their products into the website. Then client will just browse into that site to look for the products they are needed. Afterwards, if the client saw already the product and he/she will buy it and he can also pay it in the website using a card or any banking account. With these link building method it is very helpful to the sellers and the buyers because they can only process the products in the websites. Company that sells there products in the website cannot expense more money than the old times of buying and selling products. Instead they can increase their gaining percentage.