Three very useful web demo tools. Enjoy.

• Demofuse. Create a free interactive tour of your glistening Web 2.0 application or site in minutes. What’s more if you update your site, the tour will update with the changes too. Cool stuff.
• Screencast-o-matic. Free and easy way to create a video recording of your screen. Yep, a screencast maker. All done in Java from the browser, which is super neat.
• Wink. Open Source tutorial and screencast presentation program which uses Flash to deliver usefulness. Cross platform too!