Luis also points to the recent BBC article on ‘email overload’.
What I was wondering though was: now Luis stopped emailing and answering emails, does this lead to more or less work in his blog(s) and social network tools? I could imagine when you start answering emails on Facebook or on your blog, other people also start to write comments/answers back leading to more work compared to just answering that one email you got in the past. (Of course I understand that answering that email publicly on e.g. a blog has many advantages as well.)