Usability 
The Financial Times' long running mobile site was recently updated from simple text-only financial news site to a rich HTML5 webapp replace all of FT's native mobile apps. In the process it also gained a paywall. You can see the headlines for free but reading an article requires a login. A subscription uis $35/month or $325/year. However, If you register on the site you can still view eight articles per month for free.