The PBwiki team is doing some great user tools...kudos to the Wiki Team
Editing is much, much easier. Just type like you would in your favorite word processor and click Bold, Italics, and font color/size. Drag text and images around anywhere you want. It just works.
Add a shared calendar to your wiki. Or a YouTube video, Flickr photoshow, chat room, stock chart, or more. Just click "Insert Plugin."
This make this space even more interesting... getting tightly meshed and intergrated with other web2.0 apps. This makes content easier to manage. I just switched to the RTE and experimenting.