TED believes passionately in the power of ideas to change attitudes, lives and ultimately, the world. So they have built a clearinghouse that offers free knowledge and inspiration from the world's most inspired thinkers, and also a community of curious souls to engage with ideas and each other.

While the talks from various high-profile speakers are the flagship of the Ted site, the blog is great for keeping updated with this community of innovative intellectuals. As well as news about various TED happenings and events, there is exclusive content and interviews with industry leaders of all sorts, some of whom are past, current or future TED speakers. Content is updated several times a day, by a small team of core staff, which keeps the tone consistent.

It can be a little difficult to find specific content - check the right hand side of the page for the archives, and you'll see that you can list archives by topic (although topics associated with posts are not apparent in the text). Broad categories include architecture, biology, biomechanics, design, climate change, film, invention, technology, marketing and media, among many fascinating topics.

The blog has been updated faithfully since September 2005, so there is a huge library of content to search. Ideas about directly removing CO2 from the atmosphere, the geek overhaul of America, and pitch tips for venture capital strategies are just some of the eclectic topics covered.

You can also download TED talks as videos or straight audio, to listen or watch via mobile devices.