Indeed, we have this chicken and egg problem. That's why we are focusing on the HN community for now: it is feasible to be quite up to date for the frontpage, even with just the three of us! But as you said, we are actively trying to find contributors.

For now we are not giving automated summaries because we obeserved that people tend not to edit summaries even if they are automatic and hence of lower quality. What is your experience on this?

Thanks for the feedback!