Legally, if its posted in the public domain with no copyright by its "creator", its fair game.
That said, morals should count for something right? Perhaps everyone can give their permission in general here, to save you having to contact people individually? Starting with me....
That's not necessarily the case. Something being publicly available does not make it public domain. The owner does not have to state that it's copyright for it to be copyright. Generally speaking, photos are copyright to the person who took them unless it explicitly says otherwise.
I'm sure the act of not informing is copyright constitutes a forfeit of the rights thereof? A forfeit/expiry of copyright qualifies as public domain.
Its funny ownership of Pictures posted into any section of the internet, I have recently done some searches on Blue Guppies and low and behold I have had my own pictures appear from a totally different site (?). And now since these pictures are on such a readily available site (the sort that brings up hundreds of pictures) do I still really have "ownership" of these pictures?
Ps If you used any of mine you are welcome to them but I am pretty sure you only used the winners from the comps.
Its funny ownership of Pictures posted into any section of the internet, I have recently done some searches on Blue Guppies and low and behold I have had my own pictures appear from a totally different site (?). And now since these pictures are on such a readily available site (the sort that brings up hundreds of pictures) do I still really have "ownership" of these pictures?
Ps If you used any of mine you are welcome to them but I am pretty sure you only used the winners from the comps.
Checked out Aussie copyright laws to make sure and yes, legally speaking you do still have ownership of the photos because you took them. If you were so inclined you could ask the people using them on their own websites to take them down and take legal action if they didn't, not that you could really hope to gain anything from it.
I'm not sure about things like Google, but I would have thought that Google can show pictures because they do not have their own copies of the pictures in search results - they merely link back to the original image wherever it is held.