ThinkFree, the web-based document creation and management suite, has launched a Facebook application.
Upload and share documents with your network on Facebook. These can come from either your own computer, or your ThinkFree account. ThinkFree's compatibility with Microsoft Office means you won't lose any formatting of your documents, and it makes for easy sharing of documents amongst friends, and could help those college students out there put their Facebook friends to good use, sharing class notes, or something. You can also search for documents that your friends have uploaded, or link directly from Facebook to share your document within your ThinkFree Docs account.
Zoho, another web-based document management tool, has also created a Facebook application, and the Box.net Facebook application also allows you to share files with friends.