Hi All,
I didn't expect my query to generate so much interest.... even if for a few of you it was just to to tell me to get a life

And as I have one well sorted out and in no hurry to change it (thank you very much), I just wanted to also say thanks to those who gave the genuine and thoughtful input. I also want to say thanks to the photographer I linked to in my original post as he kindly got in contact (he reads these forums too) to reassure me he was indeed only using my image as inspiration. I do now believe that and as he knows from my reply, really no hard feelings and I wish him the best of luck with his photography.

The only reason I'm posting this is I find the whole debate very interesting and I'm learning lots.
To add a few things since reading the forum replies, I think a few may have missed the point of my initial ramble - which wasn't at all about " how dare another photographer take the same view as me" - it would be completely naive of me to think that I can be the only photographer of a particular view - it was about the boundaries / ethics of openly using a photo as an influence and how much different to the original it should / shouldn't be before it would be deemed deliberate plagerism. And yes, I have been inspired by others shots - many a time - that's a good thing, but for me the inspiration is about how to take a shot, a type of subject matter, atmosphere, types of people - I would say loose inspiration.
I haven't a problem at all with the same sort of shots being taken by different photographers - it's inevitable, and in groups you will always find the same shots etc etc. And photographers will find the "photographers" shot. I have absolutely no issue with that.
But to play the devils advocate here a bit and because I find this really interesting, is that if we are all apparently happy with others taking the same shots (many replies in the thread mentioned that it is inevitable, and even if it's deliberate it should be accepted etc), what is copyright for and why do we all try to protect it ? If I went out and took an exact copy of one of your shots I saw on your flickr site, then theoretically you could own the copyright of your shot, and I could own the copyright of my shot (as I took it and you don't 'own' that view or idea) , even though it is identical to yours ?
Is this acceptable practice ? I'm not to sure many of you would like me doing that, and I'd like to think it's not the right thing to do from my experience in other creative industries, but that's where it gets tricky.
We don't (and can't) 'own' a view/concept that we photograph and get upset if we see others photographers shots are by chance the same - we all clearly agree on that. But I think we should get upset if someone directly copies your work deliberately with no attempt to add their own twist, thought, or creativity. Which leaves me to ponder that fine line between what is a copy or what is inspired. At what point should we get a bit annoyed ?
There is no answer, and it will always be so very subjective and up for debate. Unfortunately it's what I completely misjudged and got wrong when starting this thread. In hindsight I do think Kevin's shot was inspired by mine, and he did actually set out to take his own version and put his own stamp on it - and that is a great way of learning. And I was very happy to hear some of you preferred his version too !
Enough from me tonight.