re: #17 Coracle

Twitter has enabled supposedly grown adults to revert to junior-high levels of social interaction. Cliques and name calling on the level of bathroom graffiti. It helps nothing, teaches nothing, convinces no one.

True, Twitter does enable this kind of behavior, but it can also be every useful - for example, when some kind of large breaking news event happens. If you follow serious people, you can get a lot of good links and information.