Just to throw out some numbers, on average I put up between 30-50 new posts per day. Out of that, if the edit limit was set to something like 30 minutes instead of 10 minutes, I would likely lose 5-10 posts per day because I could still edit and add instead of putting up a new post for new links/images. That makes it around 15-20% fewer posts on the board coming from me if the limit was set to 30 minutes. Now these numbers apply to me only but are likely in the ballpark with other heavy link/image posters. For people who largely use the board to spew opinions and argue with each other, I would think the number would be smaller.