It seems to be a gender thing.

I get contacted by male subs even when I am not looking.

However, when I was seeking a fem sub, I always made first contact and most either didn't respond or would share a few e mails, express interest and then, would disappear.

In some ways, women out number men in on line personals that I do believe some women collect on line contacts almost as though they are notches in a bed post.

No, not all women and certainly not women of substance, but yes, it would appear that many aren't truly secure and/or sincere in their interest.