I'm super impressed that you've kept all the infrastructure in-house; I'll definitely be trying this out as my default search for the next few weeks. One thing

I'm super impressed that you've kept all the infrastructure in-house; I'll definitely be trying this out as my default search for the next few weeks. One thing I noticed was that searches often return pages in foreign languages, e.g. searching 'Wikipedia' pulls up de.wikipedia.org and es.wikipedia.org as search results in addition to www.wikipedia.org. I'm sure you're looking more into how to best handle page languages, but I figured I'd mention it for the sake of user feedback :)