Quote: from Shaknbake at 10:59 pm on Dec. 27, 2008
Isn't it sometimes important to make clear that you're responding to the OP and not to some tit-for-tat later in the thread? Besides, if it's a small post...

Usually that is the time when it's appropriate to use quotes: when you're not addressing the original topic.
Personally, I really despise the abbreviation "OP."
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