Welllll, replying to a deleted post is not the reason for removal. If the message can stand on it's own and doesn't violate the rules, then it should remain.
For example: "I agree" makes no sense on it's own and therefore should be removed for "off topic".
However, "The company's phone number is 888-888-8888." stands on it's own and should remain.
If you're new to trading/investing (or even if you're not), here are some great boards to check out.