Sites doing this kind of stuff

  • Bunchball
    • Bunchball is the industry leader in gamification and works with some of the world's leading brands and media companies, including Warner Bros., Comcast, USA Network, LiveOps and Hasbro. These companies use Bunchball's Nitro gamification platform, and its powerful analytics solution, to create customized, actionable and scalable user experiences for consumers, employees and partners.
      By implementing game mechanics across websites, social networks and mobile applications, businesses can engage their users in a more meaningful way and reap tangible business benefits, such as increased customer loyalty and increased time spent on site. Nitro is the industry’s most scalable and reliable gamification platform, and serves more than 70 million unique users and 2.3 billion actions every month.
  • ChoreWars
    • Recruit a party of adventurers from your household or office, and whenever one of you completes a chore, you can log it and claim XP.
  • CyberDojo
    • Practising the collaborative game called software development.
    • CyberDojo is a browser-based coding-dojo
      • you write your code and tests in a simple editor inside a browser
      • you click a button and the CyberDojo server runs your tests
      • that's it! nothing needs to be installed - try it now!
  • Digital Photography School
    • Discover how to use your digital camera with our Digital Photography Tips. We are a community of photographers of all experience levels who come together to learn, share and grow in our understanding of photography.

      Read more: http://www.digital-photography-school.com/#ixzz1T7oHK0bz
  • Entaggle
    • Entaggle is all about giving and getting professional recognition. To recognize someone, you tag them. Tags can represent an accomplishment, commemorate an event, or recognize an important skill or attribute. You can even tag yourself.
  • The Photography Forum
    • Welcome to ThePhotoForum.com - The premier Photography forum and Digital Photography forum on the web! The site was launched back in March of 2003 as a place for enthusiasts to learn and share information. We cover all makes and models of film, digital point and shoot, DSLR cameras including Canon, Nikon, Sony, Olympus, Panasonic, Pentax, Samsung, and more! There are many areas of discussions ranging from Digital PhotographyPhotography Tips, Photography Equipment, Camera Reviews and News, HDR Images, Film Photography, Weddings Photography, How to guides, RAW, Post Procesing, Printing, Critiques and much more!
  • Stack Overflow
    • Stack Overflow is a programming Q & A site that’s free. Free to ask questions, free to answer questions, free to read, free to index, built with plain old HTML, no fake rot13 text on the home page, no scammy google-cloaking tactics, no salespeople, no JavaScript windows dropping down in front of the answer asking for $12.95 to go away. You can register if you want to collect karma and win valuable flair that will appear next to your name, but otherwise, it’s just free. And fast. Very, very fast.
  • TDGotchi
    • A virtual pet that helps you raise your TDD practice.
      Remember tamagotchi? You probably played with one at some point. You needed to feed it and care for it. A TDGotchi is similar, but you feed it tests and refactorings.
  • VimGolf
    • Real Vim ninjas count every keystroke - do you?
      Pick a challenge, fire up Vim, and show us what you got.
    • TastyCupcakes
      • TastyCupcakes is a Community portal to share games and make it easy to find games for a specific problem
      • Unlike other sites that aggregates games, TastyCupcakes:
        • is frequently updated
        • is community-led with curators
        For
        • Consultants
        • Coaches
        • Trainers
        • Team Leaders
        • Managers
        • Learning-oriented team members
        who have
        • Challenges conveying complex ideas
        • Want to change mindsets
        • Looking for fast and effective method of sharing ideas
        • Like to put on a show, fun for me and for everyone else
        • A desire to share their ideas with the community
    • Udemy
      • Udemy is a website that enables anyone to create an online course. Our goal is to provide our teachers with everything they could possibly need to create a great learning experience over the internet.