Viral marketing means spread your message voraciously by using e-mails and other sources. If you send a message to somebody however that fellow will send that particular message to someone else and like that the chain expand anon and anon, will help yo make a long network.

Well this technique is quite good for SEO guys for generating traffic to their websites, which helps indirectly make their websites SEO friendly and enrichment their business.

Viral marketing is done by community which needs social sites—like Orkut, Yahoo, Face Book, Delicious and dig. These websites help you a lot to spread your message through the community and every individual of that community spread that message in their networks. Well, it’s a nice way to bring a lot of traffic to your websites.