Teachers often complain about not having enough time to learn new skills with all the planning and marking that goes with the job. Under Ten Minutes is a fantastic website which aims to tackle this. It's aims are similar to this site. Just like Free Technology for Schools, it lets people submit content, however it is focused on short instruction videos on how to use technology, both free and paid for. The only stipulation is that if the video is about a paid-for prodoct, it cannot be a sales pitch.
Do you have 10 minutes to spare during your teaching day? If so, why not check it out and learn how to use some technology you've never used before, or if you are an expert, why not submit a video and help your fellow teachers.