The end game is now in sight. The Digital Economy Bill is now expected to become law within the next 6 weeks. It introduces orphan works usage rights, which - unless amended, which HMG says it will not - will allow the commercial use of any photograph whose author cannot be identified through a suitably negligent search. That is potentially about 90% of the photos on the internet.
Copyright in photos is essentially going to cease to exist, since there is no ineradicable way of associating ownership details short of plastering your name right across the image. Photographer's organisations have pressed hard for mandatory attribution to deter orphans being manufactured. Early in the consultation process the IPO accepted the irresistible logic that it was completely unreasonable to permit orphan use without a balancing requirement to not orphan photos in the first place. However, the IPO recognised with dismay that this would mean "taking on Rupert" (Murdoch).