I do not regret having used Twitter a lot. It allowed me to reach a large audience, at times in the range of 50k. I could often reach 200 to 500, although most of my tweets reached 5-10 people, still an important amount. These people can now contact me at my email or my website. The work of connecting to the wider public can happen again later on, but more important is the work of marshalling resources, which depends on producing the best analysis of Marx to Trotsky and the wider Left Opposition.