Windows only: Free, portable application Uploadr takes screenshots or shares files on file sharing site Localhostr with a simple drag-and-drop interface — and it even has Jump List support for Windows 7 users.
Once you've installed the application or launched the portable version, you can simply drag files onto the interface to immediately upload them to file sharing site Localhostr. You can upload single files or even entire folders of files, as long as they fit inside the 50MB total limit.
You can also use Uploadr to take screenshots of windows directly and immediately upload them. Once you've done so, you can copy the URL to the clipboard for sharing, or if you head into the options you can enable automatic copy of the URL. Uploadr is a free download for Windows only.