If this becomes common, sites could make link cleaning impossible. They can do this just by commingling the actual content ID the link addresses with the tracki

If this becomes common, sites could make link cleaning impossible. They can do this just by commingling the actual content ID the link addresses with the tracking information. Facebook has already started doing this in some places [0]. For example, Facebook posts now have opaque IDs that are unique per-user. This makes it impossible to remove the tracking information and still keep a valid link. For a news site, where they want their content to be indexed by crawlers, it might not be possible to block all non-unique links, though they could certainly make it harder. We'll see what the future holds... [0] Example of a Facebook post with an opaque per-user unique URL: https://www.facebook.com/pfbid02xQBbtJYKpp8V5j5my5jaWUVij7XCTf5ZENJndCqkoJzg53xujnkjjFJagLhWAbNCl https://www.facebook.com/pfbid02xQBbtJYKpp8V5j5my5jaWUVij7XC... ( Facebook will know which account shared this URL and there's no way for me to stop them o_O )