Social media and libraries . . . evolutionary relevance?

Libraries MUST (IMNSHO) evolve, and to remain relevant it means; that for better or for worse, not only must a library effectively utilize social media and all its foibles, the idiosyncrasies of each aspect of social media; should be exploited.

The end result of the participation in social media may or may not be measurable in the usual sense (circulation numbers/counts), but if a library chooses NOT to participate in an element of social media; the opportunity to connect with their audience; hasn't even had a chance to be measured. Definitely a case of "nothing ventured, nothing gained".

By the number of libraries featured in blogs, libraries on FB and library related hashtags; it does seem that something is being ventured, hopefully there are results being gained.