Interesting post. I do agree that certain industries have a huge amount of tweeters whilst others have a lot less. For me, I think that is similar to thinking about how an audience may size for a more niche topic, compared to a wider, more consumer focus.

I also agree that many still are growing their knowledge of how Twitter can be used for business, especially for more mainstream businesses such as accountancy/ law, or compared to smaller businesses where you have one person who doesn’t need to go through sign off processes to define how social media can be used.

Warmly

Claire