The time has come to write in English, first of all, to reach a bigger target of readers, and why not? to practice our English a little bit more.
For sure we will have many grammatical errors, but we hope to learn with time. It will be at least (I hope so) better than Google automatic translating =)
To post in English we installed a wordpress plugin called qTranslate. It´s a very powerfull plugin that allows you to write the same content in different languages. It generates a different url for each one (SEO friendly), and a widget to select it, that you will see on the widgets column.