Tipping requires leaving your banking information and SSN on a site which offers at best a "brokered" anonymity.

And in fact tipping itself has been one of the mechanisms by which Imzy's anonymity has been breached:

https://www.imzy.com/imzy/post/privacy_issues_with_tipping

My own experiences with Imzy have been less than salutory. https://www.reddit.com/r/dredmorbius/comments/500ysb/the_imz...