Click2Public is a compact application that allows you to copy or to move files to your Public Dropbox folder with just one click. In order to do that the program will add a context menu entry to Windows Explorer.
To share a file in your Dropbox, instead of opening your Dropbox account, uploading files and copying their links, you can simply right-click on the file and choose "Copy to Public".
Click2Public will do the rest automatically. It'll even go as far as to place the URL pointing to your newly uploaded file right into the Windows clipboard, allowing you to paste the link into a blog post, Skype conversation or comment right away.