I hope you don't quit posting the IotD and I think it is a great idea that you opened it up. I can't imagine the amount of time you have spent "searching" and/or even "stumbling" upon pics to post here. Some of them are quite awesome.
The internet is quite the bottomless pit of interesting stuff. You have made many, many threads with "GREAT" stuff. Opening it is a super idea. It is not difficult to find non-copywriten material on the WWW and it is obvious the types of themes that are allowed.
I stumble across some "heart warming" material at times. I would be more than happy to post a thread every now and then.
Kudo's...
