For our newer members or those of you that don't know, there is a free tool available for shortening any url link that you want to.
There's probably a few. Here's Google's -
If you are asked to sign in, then you need to create a Google account. Most of you will already have this.
So next time you see a URL link you want to share, that could fill up a book, simply open up the aforementioned free tool and copy/paste it in the box provided. Hit the blue Shorten URL button and you're done.
Too easy, but incredibly useful.