Do You Use WordPress?

http://twitter.com/chrispirillo - http://www.lockergnome.net - During live calls recently, Alex called in to ask my opinion on the differences between using WordPress and using Tumblr to blog. Tumblr is a great service and it works very well with almost zero downtime. However, I still prefer WordPress. I don't like the limitations placed on users by closed platforms such as Tumblr. What are your thoughts? Which type of blogging platform do you use - and why? http://chris.pirillo.com