The document discusses different types of online collaboration tools: blogs and wikis. Blogs allow for quick publication of up-to-date information to a targeted audience and support feedback through comments. Wikis are collaborative websites that communities use to develop shared knowledge bases which evolve constantly as users add and edit content. While blogs focus on updates and announcements, wikis are for storing and collaborating on information. Both support discussion. The document also outlines different modes of online work from individual to collaborative and peer reviewed work.