Question Mark Squircle by Xurble http://www.flickr.com/photos/xurble/376588066/
Sourcing good images for presentations can be more hazardous then you think, so Stephen Lead an Ignite Guru sent some useful information to Igniters to assist in that search.
It is so easy to find pictures using the image search function of Google, so why don’t we recommend it? Because in almost every case, it is more risky than presenters could imagine.
Why? Because photos are copyrighted and you can’t use them without permission. Instead, use an excellent free (or cheap) image resources listed at http://presentationzen.blogs.com/presentationzen/2006/01/where_can_you_f.html
Using Creative Commons Licenced Photos In Presentations
https://docs.google.com/document/d/1eWP-EyqAoiQsUYsK8Q6zhEN4pHSSWlHWLI8jV-2bkKM/edit?hl=en_US&authkey=COHkuOsK&pli=1#
You can read a useful article on Image usage here – http://pptideas.blogspot.com/2011/05/powerpoint-tip-why-you-shouldnt-use.html
If anyone would like to contribute to this post then please feel free to comment.