(the return of ) 2.0 Alphabet

is for Google Labs, a sandbox for all kinds of Google-based Web 2.0 toys. Not all innovations will become permanent features, but here you can find a definitive "Graduates" list of those which have, including Google's suite of online office applications (Docs & Spreadsheets), Google Reader, and Google Maps (an application programming interface that provides the basis for many Web 2.0 goodies).

Google Labs is a website demonstrating new Google projects "that aren't quite ready for prime time". It serves as a testing ground for new services being developed. This is a way for Google to gain feedback on the products before releasing the final versions. Google's services do not always appear on the Labs page; some are beta tested by invitation-only, like Gmail and Google Calendar once were. [Wikipedia]

Take a look at Google SMS - reference help by cell phone!

Web 2.0 Alpbahet:Part 1 (letters A - M) were originally published in Information Today 24.9 (Oct 2007): p.17(2).