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>The owners of the servers on which those images reside could start deploying tracking cookies that the forum doesn't know about at any moment. So... proxy the

• downandout 9y ago
  We thought about that, but then you run into other issues. All of a sudden DMCA claims will skyrocket, bandwidth costs rise, we may get our servers blocked from retrieving images from certain image hosting services, etc. That is not a silver bullet without its own risks and additional costs.
  • Operyl 9y ago
    Having done this myself for large forums, I think we had a single DMCA. Bandwidth costs are relatively inexpensive, too. You can cache images for an indefinite amount of time, serving them over your existing CDN, and purge the older cache based on last-to-access. I've not been blocked from any image hosting sites.