When you reply to a previous message, it is good practice to trim all surplus content from the previous post, but leaving enough to ensure correct context for your comments.
Often you are replying to a previous reply, in most cases the original message can be trimmed.
Not only does this aid clarity of message, but also saves bandwidth for those who still have poor connections, or pay per minute.
FAQ answers attributed to Raymond E. Feist are copyright by Raymond E. Feist.
It should also be born in mind that the answer given was only applicable on the date written, and to a specific question. You may find further, similar questions, in the FAQ.