The biggest use people have for LinkTrack is as a link shortening service. If you take a long link like:
You can shorten it so it looks like this:
As an added bonus, you can track how often that link has been clicked on. Each page gets its own tracking page like this one.
I used this the other day when I was meeting with a client. After I sent him directions, I was able to follow up on the tracking page to see that they had accessed them.