I second the need to do some form of detection for language. My browser tells webpages I want results in english (Accept-language header), and this can be safely used to detect what is most appropriate initially.

If not that, then at least IP, considering I’m sitting in the US.

No, please do not use IP addresses to infer UI language preference. Google does that and it a right royal pain in the arse. Every time I visit a different country Blogger's log in page is in a different language ignoring the carefully specified browser settings giving me Polish when I am in Poland, Norwegian when I am in Norway, etc.

Yep, the The Accept-language header seems the most reasonable to go for. Will try to get it out as early as possible.

Please not IP. I hate it when stupid sites insist on switching to Latvian or whatever because that's my current VPN endpoint.

Thank you for your feedback. We have just implemented auto language detection for the UI based on your browser language.

[email protected] bounces mail. It seems it's a closed list and accepts mail only from addresses already included in the list.

You should create a contact form for the search engines. Everything reachable from the Contacts link at the bottom of the page is about other products.