Here's a bit from an unsolicited Web Design and Development Services email I received today:
We maintain Web 2.0 standards and W3C validations in all the websites we design and develop.
I've heard of Web standards, and I've heard of Web 2, but I've never heard of Web 2.0 standards. I did a quick web search for it now, and it does appear that other people have also used this term. However, clicking through to read the articles, it gives me the same impression that this email gave me - they've just tried putting two buzzwords together.
Most of today I was doing church work. In the evening I played on Wii Music with Billy and Mauser. It is quite maniacal, but probably worth £3 as it is fun to play with other people.