A satchmo big defect is that google sees only the default language pages. So, if you have 3-4 languages in your store, only 1/3-1/4 of the pages are on search engines.
It's impossible to add to sitemap.xml translated pages because they share the same url, but this project: http://code.google.com/p/django-localeurl/
seems the perfect solution. it adds /it/ /en/ to translated pages and redirects defaults (without language) to the new urls, to avoid content duplication and maximize SEO.
I think it should be a great improvement to integrate that project in Satchmo by default.
Reported by aronchi