[KieranMac]

There are pro-social and anti-social uses of web scraping. If you have ever used Kayak or any other price discovery or price comparison website, you've relied on web scraping to provide you a service.

[zffr]

Also google or any other search engine

[tyingq]

I believe Kayak has agreements with the sites they scrape though. So it's a different type of "scraping", really.