In an ideal world bcsapper would be right, and making a formal complaint would always be the right thing to do. In the world we live in, making a formal complaint usually turns out like what happened to most of Bill Cosby's accusers, or the singer Kesha.
I listened to a college professor on the radio yesterday talk about going to the proper channels after being groped by a senior colleague. She made a complaint with the faculty. "I was glad that I did come forward, so that I could see what happens... which was nothing." She found out that other female colleagues had the same kind of experience with him, but he had retired by the time she had talked to other women. Maybe if those women had a way to communicate with each other, they could have impressed upon the faculty that the guy was a problem.
I have heard that some college sororities keep a blacklist of guys they consider date-rapists. I have seen guys' names written on walls in washrooms. Maybe if women had a way to network their experiences they could go forward together.
Maybe Hollywood women can contact Jodi Kantor and Ronan Farrow and say "Your story about Harvey Weinstein was really great. I have a story about Bob Blahblah..." Maybe Farrow and Kantor's work on this story will make them unofficial repositories for this kind of story, and when they get enough stories about the next creep they can go forward with another expose.
-k