Development
Web
professional
Web development has been my main focus of my career so far.
Game
hobby
I've always like game development, but it has never been my main focus.
Android
hobby
Required workaround when I discovered that web solutions for mobile apps (phonegap) were not that great.
iOS
hobby
I started investigating iOS some years ago, after developing some apps for Android.
Business Intelligence
abandoned
Mainly used when I worked for a research group at the University, I forgot everything afterwards though (: