If you use Dropbox and own an Android phone a new application is now available that will help you keep your Dropbox files on your Android smartphone synced with your Dropbox account automatically.
DropSync can be used in conjunction with the Dropbox Android application, and enables you to select a folder which will then automatically sync keepingfiles updated with alterations made either your smartphone or from another machine with access to your Dropbox account.
If it sounds like an application you could use, there is a free version available that will allow you to sync one folder. After which you can then upgrade to the full application for $6 if it suits your needs to sync more folders.
“Full two-way sync. Pick any folder on your SD card and link it with a folder in Dropbox. From that moment any changes in one folder will be automatically propagated to the other side. Both ways, not only new files but also modifications and even file deletions are correctly synced. Exactly like Dropbox on desktop.”
You can download DropSync from the Android Market now.