Interesting look at a study on the success of Tweets and Re-Tweets by Greg Beaubien at PRSA.  Althought Re-Tweet rates may be low for some, getting the initial message to the target market that you locate is important - communicate and remain social.

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The overwhelming majority of Twitter messages fall on deaf ears, new research finds.

As reported by Mashable, Sysomos, which makes tools to analyze social media, looked at 1.2 billion tweets over a two-month period and found that 71 percent of them produced no replies or re-tweets.

Re-tweets — when the recipient of a Twitter message forwards it to his or her own followers on the micro-blogging service — are especially rare, with only 6 percent of all tweets being redistributed, according to the research.

This might be good news for Twitter users who feel like outcasts because they’re seldom re-tweeted; as it turns out, the experience is typical. But when a re-tweet does happen, it’s usually in the first hour after the initial tweet was published.

Once those 60 minutes have passed, reactions are nearly impossible to come by, the Sysomos research found. And when a Twitter message produces a reply, it’s usually only a single reply, rather than the beginning of a back-and-forth conversation.

The research looked at Twitter replies and re-tweets in aggregate, which means that the percentages will fluctuate based on an individual Twitter user’s number of followers and overall influence.

via Computerworld - the expansion of Twitter continues at a rapid rate thanks to smartphone integration. 

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Twitter’s mobile user base has spiked 62% since mid-April, thanks in great part to the release of official Twitter applications for iPhone, Android and BlackBerry phones.

During this timeframe, the proportion of Twitter users who sign up for the service directly from a mobile device has increase to 16%, up from five percent, Twitter CEO Evan Williams said in a blog post on Thursday. “As we had hoped in April, these clients are bringing more people into Twitter, and, even better, they are attracting and retaining active users.

Indeed, 46% of active users make mobile a regular part of their Twitter experience,” Williams wrote. Prior to the release of those official mobile applications, mobile adoption of Twitter had been held back by the “plethora” of mobile applications that weren’t specifically endorsed by the company, which confused people while trying to pick one, he wrote.

Still, the most popular way of accessing Twitter from a mobile device remains the company’s mobile site, used by 14% of all Twitter users. SMS service and the Twitter for iPhone application each have 8% of unique users, followed by the Twitter for BlackBerry application with 7%.

Williams also said that externally-built Twitter applications have increased to almost 300,000, almost tripling since the company held its Chirp developer conference in mid-April. Meanwhile, registered users are at 145 million people.