I don’t normally respond to requests to explain an unfollow, but I can see you are active in learning systems where I have an interest.
One of the most valuable Twitter features to me is the asymmetric friend mechanism where I pick carefully who I follow. I am happy for anyone to follow me without a commitment for me to reciprocate. Currently about 4 times as many people are followers compared to friends. You can still follow my tweets.
My comfort zone for Twitter friends is:
- they tweet no more than about 8-10 tweets per day (on topics of interest)
- most tweets contain links, hashtags or other tweeps
- there are no bursts of more than 2 tweets that immediately follow one another
In your case it was the volume of tweets that put me off and the very wide range of the topics that became less useful to me. You obviously put a lot of effort into tweeting and all your information is professional and I am sure your audience appreciates it.
For my blog reading I use the http://postrank.com service where only ‘popular’ blog posts from high-volume blogs arrive in my Google Reader news stream. I guess we need something similar for tweets.
