Over the few months I have owned the EX2F camera, Samsung has issued numerous updates to its software (firmware) that the Cloud function now works. (In the early days, the camera would try to connect repeatedly and unsuccessfully.)
There is, however, one more update Samsung needs to issue: to make the Cloud upload service work with Dropbox. Samsung make some sort of deal with Dropbox, and so I am hopeful this may well show up in the Ex2F.
Right now, the camera's Cloud upload service works only with Microsoft's SkyDrive. The first time I connected, the camera showed a rudimentary Web browser on the screen that reminded me of Web browsing with a Palm Pilot. There I entered the email address and password of my wife's Hotmail account, and told the camera to remember the settings.
The camera then prompts me to select certain photos or to choose to upload all photos. It works pretty well, but with one deal breaking problem: somewhere along the line, the photos are reduced in resolution to a fuzzy 2 megapixels, making them pretty much unusable.
I don't know if the camera does the reducing, or SkyDrive, but it renders the service useless.
TIP A drawback to using WiFi with this camera is that it wears down the battery pretty quickly.