One of my favorite Second Life bloggers is Gwyneth Llewelyn. Her posts are infrequent, but they do cover a subject in depth. She has a new article up: Innovation, yes, but wrong turn. One can learn a lot about Second life from the article.
Gwyneth’s viewpoints are usually a fresh look at Second Life and the directions taken by Linden Lab. In this article she lays out a new perspective, basically calling a spade a spade. In her viewpoint Second Life is a niche product/service and she makes a good argument for her point of view. She also makes good points for what can be done with a niche market.
The four page article is worth the read.