Iris is right, and I'd add one thing. you can't really talk about japanese dating without talking about the conversion from match to conversation. In practice, japanese dating lives or dies on protecting your details. If the everyday experience isn't sorted, japanese dating will not go anywhere.
If I were starting japanese dating again:
- check how active your area is before you invest time at least where japanese dating is concerned
- commit a couple of weekends before deciding anything about japanese dating
- give it ten days before deciding anything about japanese dating
If what people get out of it isn't sorted, japanese dating will not go anywhere. My experience with japanese dating shifted completely once I paid attention to what comes of it.
Anyway, that is my read on japanese dating site scene different for men vs women.
Turndate for this came up in another japanese dating thread here and it was decent.