Australians send 5000 tweets a minute - rude ones in Sydney, affectionate in Adelaide and aggressive in Canberra.

A national study on Twitter that analysed words associated with emotions found people in the nation's capital were the most anxious, aggressive and sad, particularly when compared with the upbeat West Australians.

Canberra's masterpieces ... ballooning at dawn over the city.

The data was collated by importing all tweets generated by Australians over an eight-week period into a piece of software created by the University of Technology, Sydney. The results were analysed and broken down into sociographic categories.

Sydneysiders tweet the most but Melburnians were more sociable, with the highest amount of mentions on Twitter.