Services like YouTube and Flickr live a lie.
Many of their pages state that everything is copy protected — but then do everything they can to encourage “sharing”.
Flickr has a “Blog This” button. But … if you blog the photo it is slightly possible the original creator will be ticked-off.
But I finally discovered how to search flickr just for photos posted under a Creative Commons licence. Normally this means you can use the image under some restrictions. Usually you must give proper attribution and link back to the source.
If interested, here is the search page: flickr.com/creativecommons/
When I first tried the service, I searched for “West Coast Trail”. Look what came up:
My own photos are licensed under Creative Commons.
Rick McCharles 
Hello Mister rick
Would love to get copy of austrial course you present thanks
See you at Nationals or maybe vegas, or US congress, maybe at the lake for level 4 keep in touch need a good coach for a while if interested to develop my coachs and maybe even work on boys program
Could use some help on my additions to the gym area