What is a mashup?

A mashup is a web page which contains various media related to a topic. For an event, this can contain an IRC channel, tweets, live video streaming or something else. Example: Wikimania 2011

What is a twitterwall?

A twitterwall or tweetwall is a page which contains a twitter feed of a hashtag or topic. Example: GLAMcamp events

Image credits:
Background photo: M. Chohan (Img)
GLAM logo: Hay Kranen (Img), CC-BY-SA 3.0

List of mashups:

Want to have a mashup or twitterwall hosted here for your GLAM event? Let me know!