[srmarm]

I thought web 2.0 was more about communication flow, i.e rather than a bunch of people publishing a website for others to consume we have more of a two way communication (i.e social media). There was a bunch of tech that enabled it and came along at the same time and a very clear style that accompanied it though.

[rchaud]

There are good articles that talk about what the difference between 1.0 and 2.0 were. The transition was definitely more fluid than what numbers like "1.0" might indicate.

Web 2.0 for me was dynamic web apps like Google Docs that refreshed in real-time. Streaming video and web games were also a big part of this. The early Youtube and Dailymotion sites used Flash until HTML5 support was widespread enough to deprecate it.