That is a great thread.
From page one, you'll see how these things evolved to what they are today.
It really is a must read if you want to understand how and why they do or, don't work.
Originally Posted by Meat Burner
Agree it makes for an easier read but would suggest you still real the original uds thread. Some good information in there and gives you a better appreciation for how it all developed. You may actually learn something new!