Wordpress has it all over Blogger in terms of ease of use. And, speaking as one who gets a fair amount of traffic on my blog, I haven't had a single security issue. However, be aware that there are two different ways of doing Wordpress. One is Josh's way: your computer becomes the server. This allows for far greater flexibility in design. However, if your computer crashes, then you are responsible for backup files. There are ways to do this. The security problems are far more with this type of Wordpress blog (which is the dot org blog). What I have is the dot com blog platform. Wordpress itself hosts it (and is thus off my computer). The flexibility is not as great, but you can still do just about anything you want with regard to posting (except that wordpress.com does not take Java script). Wordpress.com blogs have thus far greater security, and, as I've said, I've had no problems with it. It is the most intuitive blog to use (I've checked out several platforms), and the Wordpress folk are always improving stuff. It is used by about half the total blogging world.
