PODCAST
A Podcast is an MP3 or other audio file delivered off a Web site via a RSS feed.
Podcast is derived from, the terms "iPod" and "broadcast".  It is attributed to the original creator of podcasting who used iPods to listen to their RSS boradcasts.  Then Apple added an RSS reader to the iTunes software, making it simple for anyone with an iPod to subscribe and listen to podcasts.  All you need to know is the URL of the RSS or XML.

If your library did a podcast of their storytime activity it would be available for your child to view again if they particularily enjoyed a session.

FACEBOOK  was created in February 2004 by a Harvard student as a social networking web site for college students to stay in touch.  It gained huge success immediately. Several months after FACEBOOK was invented, an important feature,GROUPS, was added for the convenience of sharing similar topics of interest among members.  Since then FACEBOOK groups have been heavily utilized.
Upon registration, any person can create a GROUP and invite members that are either just his/her friends, people in a network. 

FACEBOOK could be useful for libraries by notifying new library services and events and notifying members of new books.