I occasionally get email reminders from Social Web apps that I've signed up for out of interest or immediate need, but no longer consider part of my armamentarium. Why?
A lack of 'Tipping Point', untenable value proposition, other more compelling tools, or they just plain suck.
Perhaps it's personal to the user? Case in point (visual): Traveling, not traveling; have an internal tool that meets the need within the Enterprise?
Whatever the reason, I would be curious to hear...Comments, please.