Hi sun and kisses...there a lot of ways to go about that...but the one i use are pres releases and article writing....and somewhat link building too....

Method that I use : social bookmarking, link exchange (with site that is related to my site), article, newsletter, directory, and sometimes ppc.

As far as I know, viral marketing is let someone know you from other. For example, you give ebook for free to your visitor. You put your links in that ebook. If visitor like your ebook, they will tell his friend to download your ebook. <--- please someone correct me if I am wrong.

Cheers...

My - is competent content