I dislike this product because its main selling point is that it helps people with violating the terms of service of a site by rotating IP addresses and defeating captchas while crawling. Not cool.
If something is published, it's probably ok that it's watched and acted upon. Granted, people may use it differently than you intend, but that's the consequence of publishing, right?
No, because there is a big difference between information being technically out there on the internet and that information being harvested and sold to advertisers and other scummy organizations.
If I post my email address here that doesn’t mean I’m fine with it being crawled and sold along with a million other email addresses to spammers.
Where people live, their relatives, their social security #, their employer, it’s basically all out there. But because it’s kind of hard to extract this info from public records we enjoy relatively safe pseudonymity.