For anyone who is a Christian blogger or needs images for any work an update to the google image search has vastly improved its functionality. You can now search by the creative commons classification for images! This means that you can limit the search to those images which are legally allowed to use because of the permission of whoever owns the image. Previously it was dangerous to use google images as you couldn’t be 100% sure it was safe to use the images.
To use this filter got the advanced search option (to the right of the search box on the image search page) and then choose the usage rights that you need.
The jury is out as to whether the images are better than Flickr or other options, but nonetheless this could be useful source of photos and images. Just tap in your Christian oriented word and search away!