If you have ever used the photo service TwitPic - popular for sharing photos through Twitter - you might want to consider removing the images you have posted. A change to their Terms of Service, in addition to an announcement with news agency WENN, will have TwitPic selling your images for their profit.
While most of the photos shared through the service are mundane nonsense, like all data shared on Twitter, some have been socially impacting. The first photos of the Hudson River plane landing and protest photos from the Middle East. Those images will be sold for TwitPic's profit.
The changes to the ToS include,
...you hereby grant Twitpic a worldwide, non-exclusive, royalty-free, sublicenseable and transferable license to use, reproduce, distribute, prepare derivative works of ... after you remove or delete your media from the Service provided that any sub-license by Twitpic to use, reproduce or distribute the Content prior to such termination may be perpetual and irrevocable.
TwitPic is not the only service to include these clauses, but they are the first to openly say they will be selling your images regularly to a particular news outlet. I guess Google isn't the ones to fear, Facebook.