Camera images usually contain additional description about camera settings and scene information of the the picture taken. By using EXIF, you can view this data online.
Great website where you enter your iPhone or Android phone's IMEI and find out when your repair and service warranty is due and whether your device is locked on unlocked by the carrier.
A real useful web service for all the designer who want to know what colors have been used on a certain image. You can even download a Photoshop Swatch file containing the color palette of the image.
Do you want to buy new mobile phone and you don't know which one? I will show you the way, how to compare phones which will lead to an easier decision.
TinEye is a great reverse image search online service, that can tell you where an image came from, find different sizes of the image and you can find out if someone is using your image without your permission.