1. Copyright and Creative Commons
Collaborating
Copyright and Creative Commons
Open Source

2. Can I use this? Copyright: All rights reserved Creative Commons
BY – attribute the work
SA – share-alike with derivative work
ND – no derivative work
Text, images, and sound recordings belong to the person who created them. You can only use other people's work if they give you permission and in "fair use" situations. Publishing someone else's work on the web is not fair use, and you may be fined, for example, for sharing music or video that is not yours. Some people share their work using licenses like the Creative Commons license. Different versions of these licenses allow you to use someone's work as long as you attribute it to them, or even to modify their work as long as you share the result using the same license.

3. Am I giving this away? Are you giving the web service your work?
Are you giving the web service rights to your work?
When you use a web service like Flickr or App Inventor, if you upload images, you may be giving the images you upload to the service. Or, you might be agreeing they can use or sell your words or images.

4. I gave it away Do you have a right to review your data?
Protect PII: Personally identifiable information
Data about you is often sold. That information might not be accurate. If you do research on the web about an illegal drug, a company might sell the fact that you are a drug user. Laws are changing, sometimes requiring companies to let you review data about you. As general advice, do not share names, addresses, pictures, or recordings unless you feel okay about them being used to evaluate you when you apply for a job 10 years from now.

5. The New Collaborative World
Wikipedia
Free open source software
Stack Overflow
Caution is smart, but there are good reasons to use the Internet to share information with people. There are many examples of important products created by people working together, giving away their work.