What could you achieve in 100 days? Have a think about it. Probably quite a bit, right? If you really put your mind to something, and practised every day for a 100 days, you’d probably get pretty good at it.

And that’s exactly the idea behind giveit100.com. If you’re one of the 3million or so people who watched a viral video called Girl Learns to Dance in a Year then you’ve already met one of the founders of this site. Karen X. Cheng, a former designer at Microsoft, set up 100 as a way to encourage people to do the things they’ve always wanted to do, and share their progress.

You sign in through Twitter or Facebook and then start your video diary. You don’t have to do 100 consecutive days, so whatever you’re learning hopefully won’t become an onerous task, but judging by some of the stories already on here, if you stick with it, the results can be amazing.