A: Hello!

Sorry, but you can't. We built our own amazing link shortener that allows you to add Google Analytics and other tracking before shortening. You can even purchase a custom domain just for your link shortening for a one-time $95 cost, or upgrade to Enterprise for $10/mo and that and many other things are included, like a custom campaign domain and custom email domain.

Regarding commenting and liking other people's post, we are seriously looking at a social inbox because it is our highest requested feature. We will try for the end of this year, but haven't promised anything yet.