It offers similar sharing options with personal folders, though it is not image-specific.
That being said, the free account does not allow any image linking or 3rd party image hosting.
Accounts should be set to private; most are public by default.
In my opinion, Voat is a cool site like Reddit and a very popular alternative to Reddit where you can rely on.
These 3 image sharing sites are a basic need for me on daily basis but apart these 3 I never think to use others.
Why should you use SmugMug? The people with whom you share the link will be able to access and even download if you permit them for doing so.