How do you overcome that barrier? It's not even network effects alone, it's like extreme network effects because the tail is so long in science. I guess it's really the barrier between being high-level discussion about only the latest big-name science news in certain fields, and being a central hub for all kinds of relatively short comments on scientific papers. Seems like a difficult problem to solve.
Have you thought about maybe pre-populating your database with all papers, ready for discussion, rather than having it as a Reddit-like discussion of only recently submitted things? Or is there some other kind of grand vision for where this will go?