Good question?
I really think its the time of day that you place your cards in your gallery.
Some people really love to look and save to their favorites.
But don't like leaving comments.
I know that there are some Comment Threads going around here on SCs. Maybe jump on that thread.
Here is the link to that thread...It's in General Stamping:
Forums at Splitcoaststampers
Also adding a link to your gallery in your signature line might help too.