Microsoft Live Labs has launched a public beta (or "tech preview") of a new web-based application for creating, managing, and sharing lists. Listas offers a WYSIWYG editor for creating lists, tools for tagging lists so you can find them again later, and the ability to make the lists private or public.

Lista is a bit wiki-like in that you can grant other users permission to edit your lists. Say you want to create a grocery list with your spouse while you're both at work. Just start writing up your list and let your sweety know when you're out of ideas. They can then login and start crossing out all the chocolate-flavored cereal on your list and replace it with raisin bran.

You can also discover public lists that have been created by other users. Lists can include anything from bookmarks to notes on Steve Jobs Steve Ballmer's latest speech. You can check out a video with Live Labs' Raj Jain at Microsoft's On 10.