If it helps, I would say about 40 to 50 questions I have created were from a Spanish Ubuntu user who did not know English at the time. I participate not only in here but several other circles and even offer my services via hangouts to Ubuntu users from around the world that have a problem posting in English (we are talking about 400 to 600 emails/messages per year here. Basically 2 to 3 a day). Add to this a group of Spanish Ubuntu users (around 100) that I help with questions about the system.
So I would be miremore than happy and honored to join that list of translation members for Spanish users and bring Ubuntu to more users.