And to finally re-post from the Open Thread:
It should be possible to tag posts (especially articles, possibly comments) by language, and let users pick what languages they want to see. The interface wouldn't necessarily have to be translated; it would just be nice to have some support for multilingualism.
[Edit: Issues, Bugs, and Requested Features should be tracked at Google Code, not here -- matt, 2010-04-23]
Less Wrong is still under construction. Please post any bugs or issues with Less Wrong to this thread. Try to keep each comment thread a clean discussion of each bug or issue.
Requested features... sure, go ahead, but bear in mind we may not be able to implement for a while.