The internet is all about collaborations, and taking a good idea and mold it into a better one. The 5 link building methods were consider unorthodox in some sense. If you have been blogging for awhile, i am sure the methods that i have highlight could refresh your memories on the once popular viral tagging that everyone is doing in order to build strong backlinks from one another.

Does anyone care whether there is any relevance linking a blog which talks about music and a blog that talks about cartoon characters? I don't think anyone cared at that time and their objective is to get as many blogs to link back so that the next pagerank update will be rewarding with the number of backlinks attained in the short period of 3 months.