Hi again Harold, Thanks for warning me about the copyright. Actually I'm aware of it, and I always state authorship to any article I post in my blog and papers. Sorry about the word "parternship" I referred to in the previous reply, I didn't mean an "official" parternship, I meant that translating some of your articles into Portuguese I would be spreading and sharing your ideas with a great number of Portuguese speaking people that can't read English, but are interested in this field of knowledge. To avoid any misunderstanding I'm used to put the link to the original text in the end, so the translation can be checked and people can get to know the author. So, don't worry about any misuse of your texts. I'm sure I'll learn a lot from your experience shared in your blog. Thanks a lot.