Now, that's all interesting for a couple of reasons...
#1, it's great that a reasonable number of the folks involved on SO are contributing to MSO. Not just distantly aware of it, not just passively reading it, but actively posting or voting on other's posts
#2, that's a lot of people on meta, but it's still nowhere near a majority of users, even high-rep users. Think about that next time you're about to make some sort of statement about meta reflecting the SO community's decision on something: it's a small, biased sample - useful information, but useless as a binding vote.