Thumbstacks.com is a site for making and sharing presentations on the web. Thumbstack is a presentation builder and editor that runs in web browser. It has a nice online interface to create presentation.

With Thumbstacks.com, you can make presentations like slideshows or outlines in your web browser. When you’re done, you can share your presentations with anyone, anywhere, just by sending them a link.

Presentation can be created in Firefox and Internet Explorer, and you can watch presentation in about any modern web browser including Opera and Konqueror. It has drag-and-drop, WYSIWYG style editing with images and rich text.

To use the presentation builder, you’ll need a user account. Sign up to create an account, it’s free. Once you have an account, click on “Presentation Builder”, at the top-right of the page to start. You can create your presentation, save it, modify it, update it, whatever - then click on “Publish” and you’ll get a link you can use to share it with everyone.