Droplings is a menubar icon. If you drop a file on it, it'll build a nice preview page around it, upload both to your Dropbox, then copy the public preview link to your clipboard. If you drop a folder on it, the folder will be zipped up before uploading.
Droplings comes with a clean preview page theme -- see the download link below for an example -- but you can use your own custom themes. (There's documentation on how to do more...
- Mac OS X 10.6 or later
- Dropbox Pro Account