I touched Fragments once and found them not very useful (see this post). From what I have read, A Fragment is really a fancy word for an Object with access to Activity Context. I like to ignore Fragments in my work, and just create these Objects myself. I have created very large, very demanding apps by passing an Activity to constructors, instead of Context. One major benefit, however, for using Fragments is that they are supported by the View layout system - so you can easily add them to Android xml (if you use it for your layouts).
