The majority of Twitterers quickly become quitterers, according to new statistics revealed by web metrics company Nielsen Online.

Over 60% of Twitter sign-ups stop using the microblogging service after just 1 month, the firm reports.

Books are the most popular item to buy online according to a recent global survey of more than 26,000 internet users in 48 countries by Nielsen Online.

More internet shoppers have bought books than any other product online over the past three...