The point is to get your music out there from seemingly legitimate sources. You want people to hear your name and music from as many different sources as possible and online, a blog is a source along with Myspace, Facebook, Last.FM, and other music portals; they are all difference sources.
It is more powerful for a person to hear your music from three different sources than three times from the same source. Taking it a step further, I would say it is more powerful to hear of a song from multiple places garnering mediocre fame than it is to see a song garnering awesome fame from one source three times. Let’s take it another step further going offline. Let’s consider a freind as a source, this means that three different friends still counts as one source. I would go as far to say that hearing a song from three different online sources is better than hearing about it from three friends. Many of you won’t agree.
A friend while they have gained your trust and probably have things in common with you is still just one persons opinion and we know this. Even if three of our friends say a movie was good, we can still go see and think it sucked, this has happened to many of us. Now if a popular blog says a song is good, it is voted in the top ten at a Digg for music, and is one of the most downloaded songs at a music portal then the song will have more social proof then the former situation. Social proof is the most important factor for a song’s initial success.
This idea of marketing diversification can be applied to plenty of things, not just music.
