Read the given passage and answer the questions that follow

More than two decades ago we entered a new world where a mouse no longer referred to Mickey; a floppy rarely described a hat, and Apple and BlackBerry became proper nouns. We have now entered a universe where "twittering" is no longer the preserve of birds; communication in addition to food is "Delicious", and to have an avatar in a Second Life does not require the penance of an Asian mystic. We have, in short, entered the universe of Reference 2.0.

This universe has moved at such a fast clip that defining it and understanding its ramifications continue to skitter across many viewpoints. That goal of effective reference remains timeless, namely, the satisfaction of the user. However, the dramatic technology tools thrown up by Web 2.0 in which mass participation and web socialization have become both the norm and the expectation have added a new dimension to business as usual.