So it's basically for DRM.
Re:Detecting PhantomJS Based Visitors
by davelnewton on Monday June 15, 2015 @02:30PM
(#9721090)
I think DRM is part of what this attempts to protect against, but that's certainly not the only use.
It's still potentially onerous, since I regularly write agents that pull info from various places, for personal use, research, and archiving.
* Google wants to stop scraping so that you can't build a competing search engine that just scrapes Google for every search term that you see.
* LinkedIn has an amazing database of user information, you wouldn't want someone scraping all of it and creating LinkedIn2.
* One of the reasons Quora exists is that there are a lot of opportunities in mining the answers; they don't want another company to get to piggy-back on their hard work creating the site, acquiring users, making a good UI, paying for hosting etc.