Ran Hock
Online Strategies

Web 2.0 Technologies

Ajax

What Ajax Looks Like From The User's End

Google Maps
My Yahoo!
Google Docs

APIs

Lists of API Providers

WikiHome - WS Finder
ProgrammableWeb - API Dashboard

What An API Looks Like

Basic Google Maps API code

Wikis

Wikipedia
List of Largest Wikis

Getting Started With Creating a Wiki

PBWiki (Also available through Yahoo! Groups.)
Socialtext
Comparison_Of_Wiki_Software

The Web as Platform - Web-Based Software

Examples:
Google Docs
Flickr
Yahoo! Mail

Tagging and Folksonomies

Two of the Most Cited Tagging Sites
del icio.us
Flickr

Mashups

Google Maps Mania
Yahoo! Maps APIs Applications Gallery
Top 10 Highest Paid Women as mentioned in Fortune
Starbucks Coffee Finder
HEALTHmap
Geo-Names
EasySchoolSearch.com

Getting Started in Creating Mashups

Google Maps - My Maps (Example)

Map Builder       Sample
ProgrammableWeb-Mashups How-To
GMapEZ

Weblogs (Blogs)

For lots of examples, see:
Open Directory: Computers: Internet: On the Web: Weblogs
Weblogs Compendium

Finding Blogs That Cover a Specific Topic

Getting Started Blogging

Blogger.com
WordPress
Moveable Type

RSS Feeds

Readers: Web-Based Aggregators and RSS Search Engines

Bloglines
RocketInfo
My Yahoo

Getting Started Producing an RSS Feed

Using a Blogging Service to Create a Feed for You

WordPress
Blogger
FeedBurner

Creating a Feed Yourself

SearchEngineWatch - Making An RSS Feed
DevX.com - Set Up a Simple Syndication Feed Using RSS

Social Networks / Social Software

MySpace     Facebook       LinkedIn

Sharing

Social Bookmarking

Recommendations / Suggestions / Advice

Amazon Recommendations
Yahoo! Answers

Sharing of Multimedia – Audio and Video

Google Video
Yahoo Video
YouTube
TeacherTube

Widgets

Yahoo! Widgets       Windows Live Gadgets

Instant Messaging (really Web 1.0)

AIM           Yahoo Messenger