Question On Building Bad Ass Backlinks

Hey guys,

I have a question on building backlinks. I am following Pat Flynns backlinking strategy (if you dont know what that is check it out here Backlinking that works)

I plan to make solid and high quality content and regardless if this technique still works today I am going to test the waters out.

My question is that when I am submitting articles to the major article directories and creating my web 2.0 pages should I create a different login for a different niche or can I use the same accounts to try and rank multiple pages within different industries?

For example, My primary business is focused on social media management for small businesses in my region. I am also an avid musician and would like to see my music career take off at some point.

Could or should I create separate accounts on these entities (squidoo, ezines, amazines, wordpress etc...) to focus on each niche or can I use the same accounts for everything?

I am leaning towards creating new accounts for each niche site but I wanted to hear some about it from the experts on this site. Thanks!