Do you have a stat counter? Do you check it religiously to see how many visitors your blog has received? Do you assess the quality of your posts by how many comments others leave? Do you comment on other bloggers posts and do you do so because you want to, or because it might result in them commenting on yours?
Do you look at other bloggers posts and feel a sense of envy when they post top class material? Does it spur you on to improve or does it make you want to pack it up? Are you aware of who these other bloggers are? Would you recognise them ? Would you like them as people?
How did we communicate before blogs? That is, communicate to people that we didn't know existed? We couldn't. And because we couldn't, we didn't want to - or need to. But we can now. What hasn't been invented or rolled out yet that will create opportunities for our counterparts in ten, twenty, thirty years time? How will that revolutionise what they (we) do.