Beware of the New "hi. this is your photo?" MSN Virus 
Here is the latest MSN virus that is currently circulating around the Internet. It treats your computer as a botnet and help the virus maker make money by clicking on ads. Here is how to remove it.
f-the-new-hi-this-is-your-photo-msn-virus/
How to Compare the Difference Between Two Identical Looking Images
When you have 2 images that looks exactly the same but with different file sizes, you can use the free ImageMagick compare tool to learn about the difference between the identical images.
ompare-the-difference-between-two-identical-looking-ima
ges/
SignMyImage Protects Your Image with Invisible Signature
SignMyImage adds your invisible watermark sign directly to the image data. It modifies picture intensity at few places slightly. The modification is so gentle that it is invisible for a human eye.
age-protects-your-image-with-invisible-signature/
TinyEye Finds Who is Using Your Image Without Permission
TinyEye is able to help find you find out where an image, picture or photo came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.
finds-who-is-using-your-image-without-permission/