Having tried a few, taking a break when it starts to feel like admin is sensible — happy to be argued with on that one. How does the eharmony over 50 user base compare to OurTime?
You can usually tell within a week whether anyone is actually moderating — your mileage may well differ.
One thing I notice: a site with no visible moderation is not worth the time — that is the bit I would tell anyone signing up today.
Having tried a few, most matches go nowhere and that is normal rather than a failure — happy to be argued with on that one.