Sysomos | In-Depth Look at the 5% of Most Active Twitter
http://sysomos.com/insidetwitter/mostactiveusers

When Sysomos published its initial "Inside Twitter" report last month that looked at the people on Twitter and how it was being used, we discovered that 5% of users accounted for 75% of all activity. This finding was based on indexing 11.5 million accounts, and then looking at the top 5% users who accounted for most number of Tweets.

We found that 32% of all tweets made by the most active Twitter users were generated by machine bots that posted more than 150 tweets/day. The actual percentage of machine-generated tweets among the most active users is probably higher than 32% because there many bots that update less than 150 times/day. Based on our previous "Inside Twitter" report and this report on the most active users, 24% or one-quarter of all tweets overall, are generated by these very active bots. Many of these bots, however, are not spam, with some examples being @diggupdates, @deliciousrecent, @imdb, @twitseeker, @rosehose, @ladyreporter, @nieuwslijstnl, @dogbook, @ combatsi. The last three on the list - news updates from Netherlands (@nieuwslijstnl), real-time updates on what pets are doing (@dogbook), and updates from Second Life game (@combatsi) - each generate more than 2,000 tweets/day and rank as the most active bots.

Machine bots ≠ SPAM. Sysomos study says 32% of tweets by most active users are by robot but includes useful services! http://bit.ly/6i2t3 [from http://twitter.com/JMaultasch/statuses/3166705193]

5% most active twitter users

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