[bradyo]

Yeah the comments in this thread are baffling (or they didn't read the 100 character tweet lol). The tweet is just describing domain specific database-like websites. Have people not heard of allrecipes.com? Yummly? Or one of the other thousands of recipe db sites? No blogspam, just structured recipe search. You can even search by ingredient!

Mayo clinic, Harvard health, and pubmeb do a great job with health info. IMDb for movies, Goodreads for books, *gearlab.com for reviews, booking.com for accomodations.

I think the biggest threat to Google isn't a better general search engine, it's user behavior switching to more domain-specific websites as the top of the funnel. E.g. people going directly to Amazon to search for products instead of first searching Google.

To some extent, Google has figured this out, which is why they now have a dedicated flight search, hotel search, product search (Google shopping still exists and it's pretty good!), etc.