Ohh, I like this... I like to be able to read the reply with out having to scroll to China!
Don't over quote: Copying back a long post (more than 20 lines) just to add "I agree" or "me too" is considered bad form and wastes download time. Look at the size of the post you are answering and if it is over 10k trim out the portions that are not relevant to your answer. If you are only answering a portion of a question trim out the bits that are not pertinent to your answer.
Netiquette and Newsgroup Etiquette