Great article from blockchain.info's co-founder. Blockchain Co-Founder Nicolas Cary: You Can Be Your Own Bank

This is a particularly important topic:
"We are looking forward into the future and we think we are going to continue to be able to provide financial services for a millions of people around the world and there is no financial system on the planet that can compete with that today. The use-cases for a Bitcoin continue to evolve. Right now we see cross border payments as having a great potential, as well as digital payments for digital goods being very popular - people buying songs online, people buying digital content  and games, things like that".

He sees microtransactions as an interesting and evolving use-case of Bitcoin. However, it is still rare, because of the underdevelopment in fee-structures and scaling protocols.