Ulmo

Find usability problems on your website

WotNow

Know which friends are also at same event.

6Tribes - Interest based social network

6Tribes

Grewpler

The simplest interest based social feed

PlanDo

Discover activities like never before

Pinterest

Random, Interesting, Amazing Facts - Fun Quizzes and Trivia Mental Floss

Test your knowledge with amazing and interesting facts, trivia, quizzes, and brain teaser games on MentalFloss.com.

Sandia National Laboratories: Exceptional Service in the National Interest

Sandia is a multiprogram engineering and science laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the US Department of Energy's National Nuclear Security Administration. Sandia's enduring mission is to provide engineering and science support for America's nuclear weapons stockpile. Sandia applies cutting-edge technologies in integrated microsystems, computer modeling and simulation, robotics and intelligent machines, sensors, microelectronics and photonics, nanotechnology, renewable energies, combustion research, biotechnology, computation and information sciences, electronics, materials and process sciences, pulsed power sciences, and environmental sciences.

Interesting Things for ESL/EFL Students (Fun English Study)

A free study site for English as a Second Language (ESL) students with games, quizzes, puzzles, MP3 files with transcripts, listening practice, pronunciation practive, etc.

Instapaper: Save interesting web pages for reading later

Save long web pages to read later, when you have time, on your computer, iPhone, iPad, or Kindle.

Center for Science in the Public Interest

Since 1971, the Center for Science in the Public Interest has been a strong advocate for nutrition and health, food safety, alcohol policy, and sound science. Its award-winning newsletter, Nutrition Action Healthletter, is the largest-circulation health newsletter in North America, providing reliable information on nutrition and health.

LiveJournal: Discover global communities of friends who share your unique passions and interests.

LiveJournal is a vibrant global social media platform where users share common passions and interests. With hundreds of communities built around popular interests, like entertainment, celebrity gossip, music, food, travel, fashion, parenting, pets, and more, LiveJournal users express themselves through creative journaling and lively commentary.