Wow, these shiny buttons look so futuristic! I love them. I agree with Suzanne, I think that the counter should be brought back. However, the load time has been cut dramatically because of dropping the counter. I think that having a count with a high amount of Pins on Pinterest, on one of your hubs would encourage visitors to also Pin the hub and be part of the trend.
Great point. We plan to test the buttons further to see what effect (if any) displaying counts has on shares. We'll test other changes as well, such as the placement of the buttons on the page and a few different styles.