This week we're joined by Jonathan Davis, project lead for the Shopp eCommerce plugin for Wordpress. Jon shares his valuable experience, advice on the joys and pitfalls of developing a commercial plugin and tips for new eCommerce developers. We also discuss Open Source and the importance of product support.

Our ToolStar suggestion by Jon is Kaleidoscope, a visual diff tool which makes file comparison very intuitive and easy to work with during development.

Added to the Relative Paths coding playlist this week are:
- 'Abiogenesis' by Carbon Based Lifeforms, picked by Jon.
- 'Stretched Home' by The Album Leaf, chosen by Mark.
- 'An Ending (Ascent)' by Brian Eno, selected by me.

If you like the show, please leave a review or comment wherever you like to listen to us. We'd particularly love an iTunes review :)

The music we use for various intro bits, stings and outro is 'Vitreous Detachment' by Origamibiro, used with kind permission.