Much of the discussion around how to make mobile music work focus on the business model. “The record labels are too greedy” or “the mobile operators are too greedy” etc. But there is one huge obstacle in the storefront being on a mobile device. We do not have the same search, filtering and recommendation options as we do in a web storefront. A) The consumers are used to this, so why go for a worse interface and B) the ones who do try have to try pretty hard to find what they like and what other people have bought. In a recent post by Chris Anderson, author of the book the Long Tail, this is well pointed out and some numbers are put to it as well. In short a very small share of the total portfolio of songs sell in a mobile music store compared to on a computer. Read more here