Dear Sleightman,
I think you are taking things much too close to heart and you would benefit from taking a step back and thinking about things calmly.
Firstly, you seem to be blinded by IP lawyers and lobbyists' propaganda, but no, copyright infringement is not theft or robbery. By overdramatising things you undermine your own argument. Yes, any infringement of any right have potential to cause economic loss but download of, as you say, low-res picture and even reposting it does not automatically cause one.
Ironically, your own message proves my point:
Flickr is simply a place for me to showcase my work to clients and friends, nothing more. I don't make my images available in full res for situations just like this.
Obviously, it would have been impossible for poor lkevin to cause you any lost sales by posting a tiny copy of some of your work alongside some pictures of his mum on Phereo.
Yes, posting someone else's work without attribution is questionable morally and ethically but it's not robbery. If someone throws a fag on the pavement instead of into a bin, it is unethical, probably an administrative offense, but hardly a murder. So, trying to make it look like one will not gain you any supporters IMHO.
Secondly, yes, I have an issue with IP owners trying to grab rights that are not naturally theirs even if their interpretation of (obsolete and poorly drafted) laws says otherwise. I consider that this infringes *my* rights. For example, when I rip my CDs to MP3s for my own use I believe that I have every moral right to do that, even if RIAA or BPI disagree. I believe that their interpretation of law is wrong and overreaching.
I also believe that, contrary to what you seem to think, it is such overzealous interpretation of IP laws as yours which is what is damaging the creative industries. It supports monopolisation of power by intermediaries while the authors and users are being exploited. That also encourages mediocrity and stagnation.
Finally, so far you only complain. I have noticed that you haven't posted any of your pictures on this site. On the other hand, I have posted more that 300, which I'm happy for people to download, if they want. Of all these pictures there is only 1 that I have not taken myself (it's a derivative work and I put instructions how to find the originals in the comments). So, I don't think you have any grounds to accuse me of any immoral or unethical behaviour and of disregard to the work of others. I put my pics where my mouth is, so to say. Do you?
Regards