I've been in nreduce for a couple months now and I think it's a great program. The startups are very mixed in terms of goals--some are working on side projects, others are building real businesses with real customers, revenue, and all that. The community has been extremely helpful, and it's a good way to connect with people facing similar problems.
This is a bit of a glowing review, but as far as my goals of accountability and connections, it's been hugely helpful for me. And honestly, not having to give up equity or take investment is a pretty great deal.