This 'meme' map looks daunting, but makes interesting reading - it shows how 'user-centric' libraries can be using Web 2.0 principles... a true 'community hub'... many libraries have already adopted or are in the process of adopting this technology - and I can see libraries expanding, and really fulfilling their increasing roles as community and cultural hubs... there's going to be a lot of change, but a lot of fun to come... if you can cope with change!!! If not looks like you're in the wrong industry!!!
And the definition of meme according to Wiktionary:
meme (plural memes)
Any unit of cultural information, such as a practice or idea, that is transmitted verbally or by repeated action from one mind to another. Examples include thoughts, ideas, theories, practices, habits, songs, dances and moods and terms such as race, culture, and ethnicity.
A self-propagating unit of cultural evolution having a resemblance to the gene (the unit of genetics).