As a curator, I've definitely noticed the drop-off in posts, most likely by those that don't understand the opportunity that comes from a lower Hive valuation. As you pointed out, lower prices prompt users to provide larger upvotes in terms of raw tokens which can be incredibly profitable down the road if Hive sees another run-up.
Glad to see there are still quality posters out there, though ;P
!1UP
RE: The Psychology of Market Price and Engagement