I scraped around hundreds of the major universities of US for one of my client. And he used the data to build a mobile platform for students which integrated different services. I mainly grabbed course, class routines, bus route and email of both professors and students. I still have around one and half million of email address of academics.

I also did some e-commerce information scraping.

One of the most interesting one was for a data selling company. They asked me to collect data of geo information, disaster, finance, tweets etc. We used to apply ML and statistics to give forecast with historic data.