[pierrec]

That seems to be normal... I created a very similar platform (but text-based instead of graphical) and encountered the same problem. Despite the traffic, so far only 3 people shared anything on it: me, the guy who created the underlying language, and one brave soul who submitted cool bytebeat patches.

Maybe that's just the proportion of people willing to share their experiments. Maybe we need to create incentives for people to post (like... challenges?) It might also have to do with advertising to the right crowd.