Here is this week's free background image. I make one of these every week to use in powerpoint slides at my church, and I share them here with you. You are free to use them in Powerpoint (or other similar presentation programs) or to use them in any of your projects at home, work, school, or church. Use them how and where you will. I only ask that you share them freely and that you tell others that you found them here.
For those who like to know such things - the photograph is of the corroded underside of a sheet of metal. Gross. But it makes for a nice picture.