When you want to include a link in your post (either to previously posted message OR another website for that matter) go to that site and copy the URL using the copy/paste routine.

Write your message and hit "Preview Message". Scroll down to the pink star that says "You may use this form to make corrections". THAT is the place that has the box to put the URL that you copied. It also has a box for you to name the link. And you can call it whatever you like. You can hit "Preview Message" again to make sure it says what you want before you hit the "Submit Message" button. In fact you can preview to you hearts delight to make sure it says what you want. Submit sets it in stone for all to see.

-Babka

Here is a link that might be useful: Sorie6's Crocheted Christmas Tree