I’ve done this a few times and you can have a little fun as well. Want to know the age range that a 70 year old married women gets when she seeks a partner because her husband can’t get it up anymore? 18-75. It’s also interesting to see how few responses you can get, my personal best was a woman, married with children who wanted to move in with a guy (and with her children) when she left her current partner. I just got a few offers for sex, that’s it, although one nice guy said I needed to change my advert. My experiences are the same as yours – most initial responses to an advert are one liners (the old shotgun method – shoot at as many targets and you’ll be bound to hit something) with about 1/4 of all initial messages being what I’d call quality messages. Apparently, the best way to get a reply is to ask a question, although of course picking the appropriate question (and the ideal length of your message) are guesswork.