No, limits are bad. Very bad. PoW has survived for two and a half years and many times we post every like, two months. Last post was 6 days ago. It's still alive and well, breathing and thriving. If you find the right people, they will post. They'll be busy with jobs and school but they'll post. And all of you should be friends. For example, most people in PoW are Steam friends. We play vidya gaems together. We chat and socialize outside the thread. So we have all of these connections that ties people to the RP (and, in our case, we do other RPs together.) So even if nobody posts in two months, the RP is alive.