Do you think libraries should be on Facebook & other social networks - why or why not?

Question: Do you think that libraries should be offering workshops on RSS technology aimed at patrons? faculty? students? librarians?

The blog I chose is for the staff of the Las Vegas Clark County Library system and is called Virtual Library Notes:  http://virtualnotes.wordpress.com/

I like this blog because:

http://boulderlibrary.wordpress.com/

While their blog is very simple/plain visually,  it is well-utilized, though apparently under utilized. 

A relatively new blog by two public librarians sharing why these books ought to be weeded out: 

Awfullibrarybooks.wordpress.com is a collection of the worst library holdings. The items featured here are so old, obsolete, awful or just plain stupid that we are horrified that people might be actually checking these items out and depending on the information.