I admire the people who have long blog entries and emails. I just don't have that much to say!
I suppose if I wasn't trying to finish my novel right now, I would feel like writing in length and have time to research all sorts of interesting tidbits. I do a lot of research, but it's nothing anyone else would be interested in, that's for sure!
And my emails are short too. I say what I need to and move on. I know it must drive my friends nuts - they write along and intricate email, with many paragraphs, and I answer with about two lines of text!
Short and to the point I guess! (Or am I just short?)