reCAPTCHA is a free service from Google that helps protect this web-app from spam and abuse by keeping automated software out
It does this by collecting personal information about users to determine if they're humans and not spam bots
"This ... [cookie & screenshot] information ... no longer reflects or references an individually-identifiable user," but informs marketing partners of your profile and trends for third-party users on Google's brand of products
go ahead read their
privacy policy