It may work for you because you're logged in and can view the page. Upload it to imgur/tiny pic or something. Also, make sure you're viewing only the image file itself, meaning the website you're looking at it with should have an image ending.
https://dl.dropbox.com/get/01010%20inde ... l06-YSpJPA, for example, doesn't strike me as an image file. There's too much nonsense after the file name.
The link should say
http://www.whatever.com/bunnies/HAHALOL1.png(or .gif, .jpg, etc) if you upload it to a sharing site.
Uploading to imgur is very easy and will only take a minute. I was going to try signing up for a drop box account to see how you can make items public when shared, but then it had the audacity to begin installing its program onto my computer.