One great feature of Share By Link is it's ability to work over a poor wifi connection. Especially if you're traveling, this can be a lifesaver.
Share By Link constantly retries the file upload if there's an error, so if your wifi goes down, you won't lose your transfer.
So, if you're traveling across the world, to places like South America, Africa, India or Asia, you'll be able to transfer files and photos more reliably.
Simon Lightstone is a programmer, blogger and contributor to the ShareByLink project.