Web 2.0 is a loosely defined intersection of web application features that facilitate participatory information sharing, interoperability, user-centered design, and collaboration on the World Wide Web. A Web 2.0 site allows users to interact and collaborate with each other in a social media dialogue as creators (prosumers) of user-generated content in a virtual community, in contrast to websites where users (consumers) are limited to the passive viewing of content that was created for them. Examples of Web 2.0 include social networking sites, blogs, wikis, video sharing sites, hosted services, web applications, mashups and folksonomies.

The term is closely associated with Tim O'Reilly because of the O'Reilly Media Web 2.0 conference in late 2004. Although the term suggests a new version of the World Wide Web, it does not refer to an update to any technical specification, but rather to cumulative changes in the ways software developers and end-users use the Web. Whether Web 2.0 is qualitatively different from prior web technologies has been challenged by World Wide Web inventor Tim Berners-Lee, who called the term a "piece of jargon", precisely because he intended the Web in his vision as "a collaborative medium, a place where we [could] all meet and read and write". He called it the "Read/Write Web".

The 2,000 Guineas Stakes is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred colts and fillies. It is run on the Rowley Mile at Newmarket over a distance of 1 mile (1,609 metres), and it is scheduled to take place each year in late April or early May.

It is one of Britain's five Classic races, and at present it is the first to be run in the year. It also serves as the opening leg of the Triple Crown, followed by the Derby and the St Leger, although the feat of winning all three has been rarely attempted in recent decades.

The 2,000 Guineas was first run on 18 April 1809, and it preceded the introduction of a version for fillies only, the 1,000 Guineas, by five years. Both races were established by the Jockey Club under the direction of Sir Charles Bunbury, who had earlier co-founded the Derby at Epsom. The races were named according to their original prize funds (a guinea amounted to 21 shillings, or £1.05).

By the mid-1860s, the 2,000 Guineas was regarded as one of Britain's most prestigious races for three-year-olds. The five leading events for this age group, characterised by increasing distances as the season progressed, began to be known as "Classics". The concept was later adopted in many other countries.

Gary Vaynerchuk (born November 14, 1975, in Babruysk, U.S.S.R. [presently Belarus]) is a video blogger, co-owner and director of operations of a wine retail store, and an author and public speaker on the subjects of social media, brand building and e-commerce. Vaynerchuk immigrated to the U.S. in 1978, and after graduating from Mount Ida College in Newton, MA, transformed his father's Springfield, NJ liquor store into a large scale retail wine store named Wine Library, and in 2006 started the video blog Wine Library TV, a daily internet webcast on the subject of wine, which launched his career of internet celebrity.

He has been featured in The Wall Street Journal,GQ, and Time, appeared on Late Night with Conan O'Brien and Ellen. Vaynerchuk has been described as "the first wine guru of the YouTube era", "the wine world's new superstar", and by Rob Newsom, a Washington State wine maker, "outside of Robert Parker, probably the most influential wine critic in the United States". In the July 2009 Decanter publication of "The Power List" ranking of the wine industry's individuals of influence, Vaynerchuk placed at number 40, citing that he "represents the power of blogging".

Eric Emerson Schmidt (born April 27, 1955) is an American software engineer, businessman and the current executive chairman of Google. From 2001 to 2011, he served as the chief executive of Google.

Additionally, Schmidt was a former member on the board of directors for Apple Inc. and sat on the boards of trustees for both Carnegie Mellon University and Princeton University.

Along with Mike Lesk, Schmidt co-authored the lex analysis software program for the Unix computer operating system.

Schmidt was born in Washington, D.C., and grew up in Blacksburg, Virginia, United States. After graduating from Yorktown High School, Schmidt attended Princeton University where he earned a B.S. in electrical engineering in 1976. At the University of California, Berkeley, he earned an MS in 1979 for designing and implementing a network linking the campus computer center, the CS and the EECS departments, and a PhD in 1982 in EECS with a dissertation about the problems of managing distributed software development and tools for solving these problems. He was joint author of lex (a lexical analyzer and an important tool for compiler construction). He taught at Stanford Graduate School of Business as a part time professor.