YouDontKnowMe - 2:36 pm on May 2, 2010 (gmt 0)

I just installed WordPress 3.0 on a new domain just to test it out, and I really didn't notice any significant differences from version 2.x. I've read from various sources how WP 3.0 is a much more powerful CMS and has more features, blah blah blah... but can someone please tell me what the most important differences and upgrades are? I'm still sort of a WP noob, so sorry if this sounds like a dumb question.