Very difficult topic. Most know by now that the stock photo business is in the toilet and a frantic search is on to come up with new ways to capture revenue. The music and movie industries are experimenting with added value offerings. Other business models encourage repeat business through purhase rewards. I believe photographers will need to follow suit and get creative. The lesson I've learned is that policing and enforcing copyright violations has a very limited impact (that's what I call 'hanging on') whereas experimentation with different business models that can work in the age of the world wide web and the ubiquitous digital camera can lead to meaningful change (I call this 'moving on'). My experience is that moving on is almost always better, much better, than hanging on. One example is the incorporation of video into photojournalism, wedding and event photography. I've stretched to write reviews of events where I was the 'official' photographer because the magazines I deal with don't pay for photographs any more (sure they like mine better but they're not above using the crappy free stuff everybody and their brother sends in) but they pay pretty well for articles. Therefore submitting articles featuring my own images has become important to me. Doing this has not been easy but I can't deny that it's boosted my business.