Own the rights to your work is one of the most important things that has happened to the social world because anybody can find it and use it. You take an amazing photo of a sunset and then you forgot to reserve the rights and then some company picks it up and uses it for their logo. Now they get rich and you get no money at all. This is something that is easily avoidable, but not may people are aware of how to protect themselves.
With social networks being as prevalent as they are, everyone wants to share every thing they see and this can be great as long as what you’re sharing is public domain. You can’t just grab and use everything you see and I think that once people educate themselves on the basics of copyright law they will save themselves a lot of headache.
This is especially true for teachers. Say you make an amazing slideshow presentation for your class and it’s so good that other teachers in the school want to use it. Then it gets picked up and used by other teacher’s at a conference and it has your name on it. All is going well until the original owner of the images finds your presentation online with your name all over their creative designs. Now you have a problem. if only you had ensured that those images were public domain, you wouldn’t be facing a possible lawsuit.
People just need to be more careful and educate themselves because it will only be beneficial in the long run as shown here in this short video Public Domain