I just read an interview with Pragmatic Andy and Dave on Amazon.com:
http://www.amazon.com/exec/obidos/tg/feature/-/99126/002-3349751-2535250

They talk about a book they eventually want to write, "Rapid Development
with Ruby".  Have you started that book, or at least started gathering
ideas of what you will include?  I absolutely love your first Ruby book
and I would be more than delighted to buy a second one.  What's your
status?

Vince

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Vincent Foley-Bourgon
Email: vinfoley / iquebec.com
Homepage: http://darkhost.mine.nu:81