When I originally wrote this blog, between 2006-2010, I wrote all of the posts in English, and then translated them into Spanish... I'm happy to say that I have now put the Spanish posts up on the site!
So now, if you're reading a blog post on my web site that has a Spanish translation, you will see a link in the sidebar to read it in Spanish (there should be one on this page soon). Or, you can check out the entire Spanish series.
Enjoy (and please excuse my undoubtedly imperfect Spanish)!
PS: I wrote a blog post on my business site about some technical issues that came up in this process.