These are the rules, they are subject to change. If people want to read the post you are responding to they can look it up. Keep quotations short. Identify the author of each quotation you use.
Summaries are preferred to quotations.
Always cite your source. Do not post copyrighted material. Or even better, summarize the post you are responding to in your own words. Maximum one post per day per list. Edit your post to keep it brief as possible.