If you know how to sing or hum a song, but don't know the title or the artist performing it, you can use a midomi website which will help you find the the song.
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.
Microsoft's answer to DropBox or Google Drive is called SkyDrive, now with the whole new Metro interface. We will sign in to the service, download and install sync app for your Windows computer.
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.
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.