The idea of broadcasting my desires and letting my social network adjust itself is so simple and yet never, ever occurred to me
When I know that someone likes some things and not others, I've always tried to adjust my communication to fit.
For example, I love tying up women, and I have a good collection of bondage how-to books, extra comfy restraints, special Japanese hemp rope for elegant shibari style bondage, and so on. It's a big hobby of mine. But I know that some people are offended and upset by bondage, I've even been unfriended by people who couldn't deal with being associated with someone who was into it. So I've been careful who I share my interest with, to avoid upsetting anyone.
Yet I've undoubtedly missed out on a lot of opportunities. People who happen to desire to be tied up and helpless might possibly prefer in some cases to be tied up by someone who is warm, friendly, and empathetic instead of, say, someone who has suppressed anger issues