I, and others, first found out about Michael Jackson's death on Twitter.
And today I spotted a tweet from Krishnan Guru-Murthy about a piece on C4 News on the Mumbai terrorist attacks that made me turn the television on.
Twitter is still evolving. Quite how it will make money is still open to question.
I began using it to post a link to my blogs.
Now I tend to comment on events that interest me and engage in conversation with other tweeters.
Others like to use it as a public diary.
However you use it, Twitter is becoming a key communication tool.