That is a difficult question. Each and every interesting profile we see evokes a different reaction. We have no typical or formulated message. We feel that everything people need to know about us at first is already said in our on-line profile. So if there is anything that characterizes our approach it is that the message is brief. We never, however, use "have a look at our profile and tell us what you think."
One opening line that was recently used with success -- You two look great. We would like to meet you.