Uday has a really good thought piece over at Boxes and Arrows entitled What Does Rich Mean? Good question…and good answers. Read the article. This de-buzzes the buzzword “rich” for sure.
“And therein lays the great burden and hope of designing for rich experiences. As arbiters of human attention, designers must ensure there is not an overload of superfluous, gratuitous richness that distracts users or makes a product difficult to use. Recognizing that every digital product is a rhetorical moment amplified by expressiveness can enable designers to tap into the promise of rich experience: intelligently crafted, well-intentioned acts of communication that are emotionally satisfying and sensibly organized to meet user goals, thus becoming something memorable and valuable. Ultimately, that is what richness is about—connecting to those core human qualities that define our goals, values, and attitudes for living.”
See more good stuff over at his blog.