Editor's Choice - Digital Arts

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Twitter - the social networking and micro-blogging website - has seen its popularity sore in recent months. When the traffic on the site is so high that the system temporarily over-loads, an error message appears in the shape of a 'fail whale'. The icon has now become popular in its own right and we meet the designer, Yiying Lu.

More highlights from the world of digital arts:

The Strand explores the future of publishing and asks what writers think about the e-book.

Sydney Opera House is currently lit up with a myriad of shapes and colours. It's the work of Brian Eno, one of the few people who's been allowed to use this iconic building as a work of art.

The winners of the YouTube Symphony Orchestra have been announced - after thousands of musicians from around the world submitted videos of themselves performing.

The mobile phone novel - otherwise known as Keitai sho-setsu is a new literary genre sweeping Japan.