Web 2.0 Defined:

• Wikipedia Defines Web 2.0
• Web 2.0 ... The Machine is Us/ing Us (Video) 
•  Creative Web 2.0 Learning
  
•  Who Coined the Phrase "Web 2.0"
•  Glossary of Web 2.0 Terms 
•  What is Web 2.0?(Video)
  

Web 2.0 Explained -  Slideshows from Slideshare:

• An Introduction to Web 2.0

• Web 2.0 Imagine the Possibilities
• Web 2.0 and Their Educational Applications - By David Brear
•  Web 2.0 Presentation Tools & Resources - By: Patricia F. Anderson

Web 2.0 MUST READ Articles - Solution Watch
Written by: Brian Benzinger

• Back to School with the Class of Web 2.0: Part 1
• Back to School with the Class of Web 2.0: Part 2
• Back to School with the Class of Web 2.0: Part 

Online Calendars, Planners & Organizers:

• Google Calendar
• SpongeCell
• CalendarHub
• HipCal
• Google Sites 

Online To Do Lists: 

• OrchestrateHQ
• Ta-da Lists 
• Remember the Milk 
• Toodledo
• TODO List - Google Modules

Web 2.0 Startup Pages:

• iGoogle (Create a Google Account)
  
• Protopage 
• Netvibes 
• Pageflakes
• Windows Live
• Eskobo
• ZimDesk
• Sosius
  

More Blog Sites:

• Blogger
• WordPress
• Edublogs
• Google Sites
• Blogdigger (Blog Search Engine) 
• Scrapblog
• Scrapperie (Scrapbooking Blog)
• Jing
  

Podcasts & Podcasting Sites:

• iTunes
• Podnova
• Educating With Podcasts  

Miscellaneous: