Apparently so, based on two recent studies.  In the first, I’m once again honored to be included in a ranking by the Technobabble 2.0 blog, which is written by Jonny Bentwood, an analyst relations guru at Edelman PR in the UK. His latest ranking is called the Top Analyst Twitters (Micro-Bloggers). 
Earlier this year, my blog was chosen (for the second time) as one of his Top 100 Analyst Blogs, and now it’s great to be recognized in this newest ranking — at #18. As Bentwood said in his latest post, "It is not a massive shock that the people who have scored highest are the same as those who use blogging to great affect."

Technobabble’s methodology for its Twitter ranking was based on four data points, which were then weighted.
The data points were 1) number of followers; 2) number of updates, which is what posts are called on Twitter; 3) conversation, or how many people have engaged in conversation with each analyst; and 4) "Technobabble points,"  the only personal, subjective measure in the algorithm, said Bentwood, with those scoring the highest in this category "having frequent, relevant, and high-quality content — asking questions, posting links or commenting on discussions." The following weightings were then used to come up with each analyst’s score: Followers=30%, Updates=15%, Conversations=30%, and Technobabble Points=25%.

In an earlier study, a few weeks ago, Louis Gray asked What’s Your Twitter Noise Ratio?  He said this in his blog post, explaining how he came to do his study: "I feel there are different categories of Twitter users, from those who
have a listening audience, measured by a high ‘followers’ to ‘updates’
ratio, those who are engaging, seen with near equal ‘followers’ and ‘updates’, and those who are more noisy, with a lot more ‘updates’ than
actual ‘followers’."

He explained how he did his analysis: "Taking a look at 48 Twitter users I either
follow or engage with, I found the average number of ‘tweets’ per ‘follower’ was almost exactly 1, measuring at 1.02. But the ratio of
updates to followers varied widely, from the sleepy 0.06 to the firehose-like 9.75."  I left a comment on Louis’ post, noting I was very glad to see, upon calculating my tweets-to-follower ratio, that it was 4.84, ranking me quite high in his "Converationalists" category.

In another article just published today, How Valuable Are You on Twitter?, Daniel Terdiman of CNet examines the topic from some other angles, including Twitter coverage of the China earthquake, and citing the opinions of other some leading observers and Twitterers in regard to measuring the value of this new micro-blogging medium.

What do you think?  How do you use Twitter?  Is it valuable to you?  In what ways?