Some subscribers to Twain-L might be interested in a recent post 
"Listserves Are a 21st Century Tool With Advantages Over 'Web 2.0 
Social Media' #2" [Hake (2012)]. The abstract reads:

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ABSTRACT:  In an article "Where Do Listservs. . . . [[sic - 
"listserv" is a trademark of L-soft , the generic term is 
"listserve"]]. . . . . Fit in a Social Media World? The networking 
tool of the 90s is starting to show its age," law librarian Greg 
Lambert implied that listserves are a "20th Century Tool in the 21st 
Century" which clog up the email inbox.

But if Greg had subscribed to discussion lists running on LISTSERV 
software by L-Soft [see at <http://www.lsoft.com/> and 
<http://www.lsoft.com/catalist.html>] he could have subscribed in the 
NOMAIL mode, thus receiving NO MAIL from the list while being free to 
browse the archives and post at his leisure, thus saving time, hard 
drive space, and sanity.

More generally, that Web 2.0 social media tools are much more 
efficient than listserves is problematic at best - see, e.g., Gerald 
Grow's (2009) list of 11 advantages of listserves at 
<http://bit.ly/wBApNg> (scroll down about half way). 
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To access the complete 14 kB post please click on <http://bit.ly/y2M2t3>.

Richard Hake, Emeritus Professor of Physics, Indiana University
Honorary Member, Curmudgeon Lodge of Deventer, The Netherlands
President, PEdants for Definitive Academic References
      which Recognize the Invention of the Internet (PEDARRII)
<[log in to unmask]>
Links to Articles: <http://bit.ly/a6M5y0>
Links to SDI Labs: <http://bit.ly/9nGd3M>
Blog: <http://bit.ly/9yGsXh>
Academia: <http://iub.academia.edu/RichardHake>
Twitter <https://twitter.com/#!/rrhake>

"It is not enough to observe, experiment, theorize, calculate and 
communicate; we must also argue, criticize, debate, expound, 
summarize, and otherwise transform the information that we have 
obtained individually into reliable, well established, public 
knowledge."
       John Ziman. 1969. "Information, Communication, Knowledge," Nature 224:
           318-324; abstract online at <http://bit.ly/cNPB1d>.


REFERENCES [URL's shortened by <http://bit.ly/> and accessed on 04 March 2012.]
Hake, R.R. 2012. "Listserves Are a 21Century Tool With Advantages 
Over 'Web 2.0 Social Media'  #2," on the OPEN! AERA-L archives at 
<http://bit.ly/y2M2t3>. Post of 4 Mar 2012 13:08:07-0800 to AERA-L 
and Net-Gold. The abstract and link to the complete post are being 
transmitted to several discussion lists and are also on my blog 
"Hake'sEdStuff" at <http://bit.ly/xbTnMS> with a provision for 
comments.