Web 3.0 will be about semantic web, personalization (e.g. iGoogle), intelligent search and behavioral advertising among other things.
This illustration was created in early 2006 using logos of Web 2.0 companies that made headlines or were launched around that time. Obviously, lot of things changed in the last three years - some companies got acquired, some became successful on their own while others went bust.
Are you a blogger that loves to get in to test new sites first? Many of those sites are trying to reach you too - but they get lost amidst all the press releases for stuff you don't care about.
The owner of the T-shirt is expected to mark the services he uses with a pen and to wear it in public. What happens when users start wearing their network identities openly in public? What does identity mean in the age of Web2.0? Where is this still growing mass of webservices leading to?