I miss when Yahoo was really cool. Even long after it was made irrelevant, it had some of the best freely available public data APIs on the web.<p>I remember in college, one of our first programming projects was to create a "weather website" (this was before everything was an "app"). The project instructions suggested we use the Yahoo weather API, and it blew my mind that anyone could just make a http GET request and instantly get back some human-and-machine readable data, no scraping required.