Why is Facebook hiding platform application user numbers?

Facebook's launch of their new platform has been the hot story of Silicon Valley for nearly a week now. An initial rollout of 80 apps on an open platform created a wave of buzz and adoption that has been impressive to behold. But the hot story hasn't been just about Facebook. It's been about Jeff Jarvis' teenage son Jake creating a last.fm app that garnered over 15,000 users. And most notably, it's been about iLike's astonishing rise to over 750K users in less than a week.

Are stories like this one on VentureBeat -- all about iLike, and not about Facebook -- the reason that, with the rollout of their new "most recent" and "most popular" functionality for finding apps:



Facebook appears to have hidden the number of users for a particular app? I can still see the friends, I can still see the reviews, but I can no longer see the number of users:



Whassup? Hey, Facebook! Doesn't open mean open?