Ok, you quote a post. The quoted post is blue and your new text on white. Someone then quotes your post and the original quoted post is blue, but the second post (which is also being quoted) is on white. It is indented but it is not at all obvious that the second post is part of the quoted material, and some people might mistake the quoted words of the second post as being posted by the third post. Putting the words into the wrong mouths, so to speak. This would make quoting fairly useless as a substitute for the threaded view as a means of conveying who is talking to who (not mention the length of the posts that are going to result.
The Naked Whiz