With the advent of Twitter I've blogged a lot less. It's tempting to think that I've been sacrificing long, thoughtful blog posts for short, mindless Tweets. It turns out that a decent portion of my blogging volume, especially in my early blogging years (say 2003-2006) involved short posts. I recently reviewed a lot of my earlier blog posts, and noticed many of them looked just like Tweets. They may not have fit within the 140 character limit, but they were short indeed.
For me, Twitter is a very compelling medium. It's more interactive, more frequently updated, and just easier to use. I have only ever blogged from a laptop. I use Twitter a lot on my phone and increasingly on my tablet. The ability to send a Tweet while reading a Web page is especially compelling.
On the down side, Twitter surely lacks the "institutional memory" of a blog. I can easily search my blog for past content, navigate via time or label, and read fairly complete thoughts in a narrative format. I can build a new book around ideas on my blog; I can't do that with old Tweets.
Note: can anyone remember who posted the analysis of blogging vs Tweeting output? I was listed in that post but I don't remember who wrote it. Also, thanks to activating a setting on the blog, I now get an email whenever a visitor posts a comment for moderation. Expect faster response times now!