Some of you might remember Karen X. Cheng, the Bay-Area resident whose “Dance in a Year” videos went viral a few months back. (Backstory: Cheng, an amateur dancer, posted daily videos of her 365-day transformation from rank beginner to dance goddess.)

Here’s some news: Cheng seems to have started another viral phenomenon through a new social-media website. It’s called GiveIt100, and it’s based on a simple idea: you practice something for 100 days and share video each day.

I highly recommend checking out the site’s project page — just roll over a video and it starts playing. You can see people learning Russian, doing pullups, unicycling, drawing, painting, programming, juggling, playing guitar, you name it. You can see the clumsy early attempts smoothing out into fluency and speed. You see the disbelieving smiles.

Of these inspiring stories, perhaps the most inspiring is Cynthia, who suffers from MS and who is using GiveIt100 to share her daily progress toward learning to walk again. (Tip: keep Kleenex handy.)

I could see this site being useful for students, teachers, coaches, and athletes of all ages; either posting their own sessions or learning through the experiences of others. I could imagine it being used as a source of coaches and mentors. Or as simply a source of daily motivation (after all, who needs a pep talk about daily discipline when you can see and feel the proof?).

I have a hunch GiveIt100 may be a glimpse of the future of talent development, because it uses the power of social media to support good habits, provide useful models, and help people coach themselves and each other. And also because this approach is aligned with the fact that when it comes to developing talent, it’s not so much about who you are — it’s about what you do.

Have any of you guys tried it yet, or know anybody who has? What do you think?