I have zero interest in twitter. I'm not really a 140-character person. Blogging is more my pace because I like to let my posts gestate for a while, and then write up exactly how much I feel works for a particular subject.
I also don't care to follow my scientist friends on a real-time basis. When I'm at work, I work. When I'm at home, sometimes I sit back with a glass of wine and relax on the couch with a book. Perhaps I'm inherently antisocial, but I'm not interested in the back and forth of discussion on twitter - or other platforms. It's not a surprise that I'm not a terribly active facebook user either.
For me, blogging is a way for me to build up a repository of