The social media landscape is an ever changing ecosystem that doesn't really bend with the creativity of its founders. It is all up to the users these days, and that pretty much determines whether a service is going to last or fall into the shadows of a new, more interesting, social media site.
This infographic clearly outlines the rise and fall of some of the social media sites that we have found exponentially useful at some point, but they were overtaken by the new social networking sites that increased productivity and interaction, which seems to be what people are looking for.
