Here is a rough outline for a presentation I'm doing later this week re: Read/Write Tools for Educators: From Low Tech to Go Tech. Enjoy!
What is Web 2.0?
"a set of principles and practices that tie together a veritable solar system of sites that demonstrate some or all of those principles"
Alternatively, Web 2.0 can also be referred to as the Read/Write Web.
Essential:

Firefox
Search Engine:
Google Search
Office Replacements: Note Taking/Collaboration/Calendar
Weblogging
Edublogs.org -- a weblogging platform and community for educators
Blogger -- a weblogging platform for all comers
Weblog Reader
Google Reader -- aggregate multiple website feeds
(What is RSS? -- RSS in Plain English)
Bookmarking
Delicious -- catalog, manage, and share Web resources
Mind Maps
Bubbl.us -- online brainstorming
Flowchart.com -- create and share flowcharts
Gliffy -- multiple chart types to share and create online
WikisWhat's a wiki? presentation
pbWiki -- a simple wiki platform to get you started
Presentation tools
Slideshare – upload and present your slides
Empressr – media sharing
Social Networking
Facebook – friend and colleague portal
Ning – user-created community Websites
Twitter – microblogging
Skype – VOIP conferencing/chat
Broadcasting Tools and Media Sharing
UStream -- Platform that provides live interactive video for everyone
YouTube - a great deal of content ranging from academic to scatologic.
Google Video – see YouTube
Flickr – photosharing
Other Resources
Bibliography:EasyBib – online bibliography resource file
Zotero -- a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources. It lives right where you do your work — in the web browser itself.
Quick Reference:
Wikipedia -- the Cliff Notes of our collective intelligence
Watch List:

Yugma -- Yugma enables any group to spontaneously collaborate on projects in real-time. Collaborate anytime with offsite team members, give virtual presentations, host webinars, streamline workflow, provide remote tech support, and much more.
LiveMocha – live language teaching site
Twine -- your very own intelligent personal Web assistant
YouOS -- an online desktop application
Additional Resources and Places to Peruse:

Web 2.0 Backpack: Web Apps for Students
Top Web Tools for College Students
DIRECTORY OF LEARNING TOOLS -- This directory contains over 2,000 tools for learning. It is divided into 2 parts:
2) Personal Tools - for managing your own learning.
The tools in this Directory are both freeware/open source and commercial.
EDUCAUSE Learning Initiative -- The EDUCAUSE Learning Initiative (ELI) is a community of higher education institutions and organizations committed to advancing learning through IT innovation. This site houses resources, briefs, papers, case studies; events; videos, and podcasts.
Free Online Educational Sites -- Links to a variety of free and open content in support of teaching and learning.
Buzzywords:
ICT – information and communication technologies
CMC – computer-mediated communication
PLE - personal learning environment
Tagging -- user generated labels for their Web collections
The Long Tail -- Web as power curve
Mash-Up -- hybrid web applications
Small Pieces Loosely Joined -- the Web as components
Social Software – computer applications that enable social interaction online
Social Networking – using the Internet to connect to people
Open Source – code sharing
Creative Commons – copyright and distribution terms
Keywords: computing, educational technology, learning, presentation, teaching, web 2.0, web tools






Comments
Hi Chris, great post and one that I'll no doubt use in my classes.
I think I might add a section on podcasts too. Something like:
Podcasts
What they are and how to produce one
along with some links to
Podcast Alley - a directory of podcasts
Podiobooks - serialised audio books
Podcasts for educators, schools and colleges
Tumblr - blogging lite
Wordpress (Hosted at wordpress.com or download and DIY.)
Libravox - for the podcast section
Excuse my fat fingers, I meant librivox.org