Donncha has released a FAQ for wordpress.com users which answers a lot of the most frequently asked questions.
I’ll talk more about this later, but remember this. WordPress is user driven. If you don’t like what is going on, complain, loudly, with specific suggestions. Squeaky wheel and all that.
Thanks to Donncha for providing extensive information and working so hard with so many other volunteers on the WordPress development team, bringing us the latest and bestest WordPress code, although it is a bit limited on wordpress.com.