Yes, you can share your link on pretty much any platform but you'll have to first "wrap" it with a link shortening service like

What this means is you'll be placing your full promotion link into the bitly system, and they in turn will give you a SHORTER link, which you can promote anywhere.

When people click on the link it will redirect them to your promotional link... pretty simple.

Here is the flow: (short) link >>> goes to your promotional link...

Here is the website:

When you get there, simply grab your link to promote and PASTE it into the box with the orange button that says "SHORTEN"

As soon as you do that a box below will appear with your new SHORT link, which you can promote anywhere... yes even on Facebook :)