How do I stop image spam from being uploaded to my (future) site?
- by Pete Lacey
I have in mind an idea for a generally accessible site that needs to allow images to be uploaded. But I'm stymied on how to prevent image spam: porn, ads in image form, etc.
Assumptions:
I'm assuming that the spammers are clever, even human.
I'm skeptical of the efficacy of image analysis software.
I do not have the resources to approve all uploads manually.
I am willing to spend money on the solution -- within reason.
This site will be location-aware, if that helps.
How does Flickr do it or imgur? Or do they?