Now, that big long number at the end is the thread's ID number. Now say we want to find a specific thread, such as a certain horse, and we have that horse's ID number. Just attach that number to the end of the following:
Once you have the completed URL, go ahead and use it. It will bring you to that particular horse!
Not a lot to say about signatures. You can decorate it any way you'd like, so long as you somehow manage to include whatever stock you own, either from links to profiles or ID numbers.