Phil Windley writes about Nick Gall’s keynote at OSCON:
Web 1.0 made a three compromises. It was read-only, one-way links, and macroformated (page-level granularity). Gall says that search engines are an example of something that’s been layered onto Web 1.0 to deal, in part, with one of these compromises (back-links). Web 2.0 fixes these three compromises.
There will be unintended consequences of architectures in internetworked architectures. These can result in serendipity (like mash-ups, RSS, and podcasting) as well as perverse effects (like viruses, spam, and phishing).