Remember Google Wave or Digsby, what about Del.icio.us and Fring? Product Graveyard is a place of rememberance of apps and services of the past, why they were sunsetted and great living alternatives.
All nicely packaged with informative details, Product Graveyard is a fun walk through memory lane and you event have the Net Promoter Score if suggested replacement. The NPS score is an industry standard way for users to rate the software they use. Higher means better!