Only ever use online translators for single words or if you are trying to get the jist of what someone is saying.
I remember this one occasion about 4 years ago, our French teacher handed us out three paragraphs to translate from french into english and 3/4 of the class handed in the same babelfish translation
Usted debe ser un genio. Déjame intentarlo. Usted es un fan del Manchester United why se llega desde el Reino Unido. Vamos a tratar de permanecer en el tema con el comentario anterior