I have noticed there that, besides English (UK and USA), we can have the site also in French and German. If you need/want more languages, I can translate to Portuguese.
My real wishlist is on steam. My wishlist here is for trading purposes. I like to trade for games I do not own based on Want/Have Ratio, rather than other approaches.
I think the language files are several hundred kilobytes total. I only have those to offer, plus Turkish I think, but we didn't have Turkish members at the time I removed multilingual support anyway.
Contributions welcome, if only for the index.english.php file, which is short and has 90% of the strings you'll see on a regular visit. But again, this is forum-only, and thus rather useless for now. Language files are mostly for forums where that language is used primarily.