It's a Web, Web, Web 2.0 world

It's not just Silicon Valley. The user-generated revolution is in full swing worldwide. Business 2.0 Magazine picks the best non-U.S. sites to watch.

Vivapets
Social networks
Vivapets
Using a combination of expert articles and Wikipedia-like contributions, Vivapets is trying to catalog every pet breed -- and it's a social network to boot. Unlike Dogster or Catster, Vivapets is open to all pets, including reptiles and exotic animals. The site allows users to create pages for their pets and add photo albums, then engage with a network of friends through forums, chat, or personal messaging. The site currently has 100,000 registered users and claims 220,000 unique visitors each month.

CEO: Marcos Cerqueira

Location: Oporto, Portugal

URL: vivapets.com

Launch date: 2003

Funding: Not disclosed (founders)

Joost

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Babelgum

Myubo

mTouche

Rebtel

WidSets

Bezurk

Tractis

Maxthon

Sky-Click

Stardoll

Burrp

OhmyNews

Keotag

YoYo Games

Spreadshirt

Trendio

eSnips

Afrigator

Bliin

Weblin

Pixrat

Cambrian House

Khichdee

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Babytree

Vivapets

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eDushi

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