tedster - 5:11 pm on Mar 25, 2011 (gmt 0)
Matt Cutts recently published a video where he encourages the use of a separate domain for each language as the best solution. How should I handle localized content? [youtube.com]
For best results, make sure you use 301s in a technically sound manner:
1) No canonical issues on either domain.
2) All redirects are one-step only - for example, you DON'T want this:
example.com/page.html > www.example.com/page.html > www.example.fr/page.html