The author of the blog, Emanuel taropa, is one of the most brilliant software engineers I've met.
Didn't he write the predecessor to Effingo (http://www.cs.huji.ac.il/~dhay/IND2011.html), more than a decade ago? I still remember his name and email because the service was great, but also difficult to tame. And you'd end up asking for his help.
I can't really share that level of detail, but what I'd say is, if you noticed your searches were fast, and the results were fresh and accurate, then Emma probably had a hand in it.