In reply to Common Sense.

Rihanna is always promoting something for the sake of promoting herself.
She's released an album a year for the past three years, which might seem prolific compared to other artists. However, I’m not sure if her ‘selling a crapload of songs on iTunes’ amounts to a legacy or just a hard-fought battle to keep the world from forgetting she existed. If you have millions of Facebook fans and Twitter followers, can you ever allow yourself to become unfamous? Unless you're going to pretend to have a baby, there's probably never a reason to take an extended break between album and promotional cycles.