You can type some text into "Link text (optional*:" but in my experience I'd rather see the URL in the post. To me it always feels a bit dangerous to blindly click on a blue link unless I trust the member posting it.
~~~~~~ Some URLs don't show the http or www prefix but when you do the copypaste they show up. ??I think it is particularly the http \https part which the Mudcat blickyfier needs. Someone else might explain that better.
By clicking on the User Name, you will requery the forum for that user. You will see everything that he or she has posted with that Mudcat name.
By clicking on the Thread Name, you will be sent to the Forum on that thread as if you selected it from the main Mudcat Forum page.
By clicking on the Subject, you will also go to the thread as if you selected it from the original Forum page, but also go directly to that particular message.
By clicking on the Date (Posted), you will dig out every message posted that day.