Should a community be “tweeting”?

Micro-blogging, using a tool such as Twitter or Yammer, has become a very popular way for some communities to stay connected. It is used in a variety of different ways, including to:

Stay connected. Micro-blogging allows members of a community to be in very close contact on an ongoing basis as they subscribe to each other’s “tweet” feeds. It is way to follow what members are up to through the website or through a desktop or mobile application.
Leverage the network. Community members can also use these “tweet” messages to get just-in-time help, instant responses to a request for information, or quick feedback on a thought or new idea.
Filter multiple sources. “Following” people you trust who share information that interests you serves as a filter to the multiplicity of content that is now available on the web. There is no reason to follow everything, just the people in your community (and beyond) whose tweets you trust to be interesting or useful.
Live tweeting of an event. Communities sometimes choose a “hashtag” (a tag with the # symbol before it) when they are holding an event. Participants and people interested in the event can report about or actively follow the event by including the hashtag in their tweets.