to this week's show, presented by Aleks Krotoski, with Charles Arthur, Bobbie Johnson and Jemima Kiss.
Clay Shirky (pictured) - internet guru, professor, author of Here Comes Everybody - talks to Charles about how some social tools and a lack of organisational structure would have done Microsoft's Vista the world of good; and Bobbie Johnson talks to the people behind the BBC Micro at a Science Museum discussion.
As always: your thoughts and opinions are welcome - leave them in the comments below.