The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Christopher Sexton:
Screen Capture Sharing for Mac. Automatically uploads screenshots to imgur.com and copies the url to your clipboard, ready to paste.Step 1: --4 Take a screen shotStep 2: -V Paste the linkNo additional steps added. Take a screen shot and Captured will upload the image to imgur.com automatically, and copy the link to your clipboard. Captured is designed to use very little system resources and has no clunky UI to deal with, all the processing happens in the background. Automatically.Almost immediately after taking a screen shot Captured will upload the image to the server. While this happens the menu extra icon will change to full color to let you know it is uploading. Once it is complete the icon will show a green screen to let you know the upload has finished. At that point the URL of your screen shot is on the clipboard, ready to share.The goal is to take a common task and stream line it to the absolute minimum possible. Allowing you to work faster, and spend more time thinking about your projects and not how you are going to share a picture.Important Note: After installing Captured you have to double click on the icon to start it. When this app is running you will see the icon in the menu bar on the upper right of your screen. If you want Captured to start up automatically make sure to choose "Start at Login" from the menu.