If you have no one to launch to, who are you building for? How did you validate your idea?

The answer depends on what you are building and who you are building it for. The default approach is a little crowded, a little spammy. No one likes someone who joins a community just to self-promote.

More and more, my approach has been to build customer streams instead of finding them one by one. Don't sell to restaurants, sell to those who sell to restaurants. This has served me well.