We have covered various freeware application which allows you to change and rotate the logon in Windows 7. But unlike other apps, 7LogonChanger is quite different in its approach, it can fetch images from Flickr and Picasa based on tags and these images can be used as wallpaper or Windows 7 logon. You can also easily restore the default logon in Windows 7 in case you want to revert it back.
Related: Change Windows 7 Logon Screen
You can type in the keyword and then search images or features images only. The application detects the current resolution of the screen. Double click on the preview box, select image, right click and Set as Logon. You can also set the image as wallpaper using this option.