I read in jmones and pqs weblogs some thoughts on some interesting posts and positions about multilingual blogs and proper use of tags for this purpose.
When I updated this web site last time, I considered it already; and thanks to Drupal flexibility and modules such as Translation, I have been able to maintain documents in more than one language.
One day, I must check the taxonomy and vocabularies I am using. Anyway, I have added 'In English' and 'En español' tags in order to make easy for anyone to find these translated contents.
In the left top of this weblog, there are some links pointing to automatic translation engines. Sadly, especially with English, the translation is far from being acceptable.