Copyright protects material on the internet, the internet it is not in the public domain or copyright free. The general school of thought is that material made available on the Internet is considered “in the public domain” or “free for use”, giving rights for works to be downloaded and used. Unless stated otherwise you should assume you can only view or print materials for personal use only – single use.
Most public use of copyright works requires a permission or licence, the exception being works licensed for use under a creative commons licence or educational use licence.
Social Media, Flickr, Yammer, Facebook, Blogs and Wikis
Images found on Google are protected copyrighted works Google is a search engine that searches the internet for images try searching Google for creative commons images - how to search for creative commons images using Google