I heard this extended conversation about Web 1.0, 2.0, and 3.0 today. Sheesh...It's obvious that the definitions of these terms are rather ill-defined, or are in the minds of the beholders.
I'm not sure I came away with any succinct difference between 1.0 and 2.0 from the podcast. I think I get the distinction of 3.0 -- the "semantic" web, which provides for both human and machine readable data.
In regards to the discussion at the end of Episode 660 about what to call web 1.0, 2.0 etc, I thought I'd chime in with my own definitions, which I've collected over the years.
I believe the era of the Web (web 1.0) began in 1994 when Sun Microsystems created the first true web page for the Football World Cup. Web 1.0 is categorised by it's use of print metaphors ? for example, everything from that time was either an electronic catalog, and electronic article, and electronic brochure, etc. etc. The term "web page" is perhaps the best example.
But web 2.0 no longer has a print counterpart. With the birth of online software, database-driven sites, and the interactivity of commentary, web 2.0 accomplishes things that can't be done on paper, even if you're sitting in the same room as someone else. It's about software on the web, and therefore the term "site" is more appropriate than page. Yes, as Tom says, there is a certain aesthetic associated with Web 2.0 ?