I'm not entirely sure why twitter is useful for any purpose other than the three 'new' ones outlined. If you're someone who isn't representing a business or a

I'm not entirely sure why twitter is useful for any purpose other than the three 'new' ones outlined. If you're someone who isn't representing a business or a celebrity twittering, the fact is, no-one cares about any opinion you have which can be expressed in 140 characters.