Paul Carr stands in one last time for Aleks Krotoski.

This week Paul is joined by our Tech editor, Charles Arthur, and Moreover Technologies' Angus Bankes.

Jemima Kiss talks to YouTube's Patrick Walker about fingerprinting technology and making money from ads. Bobbie Johnson meets Telnic's Justin Hayward and learns everything he wanted to know about the dottel domain, but was afraid to ask.

Also, a look at this week's top technology stories and Paul has fun sifting through your comments left on all the Guardian's tech-related blogs.

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