Some of my questions and answers have been voted on (both up and down) on this meta site.
Why doesn't my reputation change, like it does on the primary Meta site?
1 Answer
As reported on Stack Overflow Blog, in the New Per-Site Metas post, which talks of the Stack Exchange 2.0 meta sites:
Reputation is always inherited from the parent site. You cannot gain or lose reputation* on the per-site meta. This also means that some reputation related functions like the reputation graph, and bounties are not enabled on the per-site meta.
Voting up or down does not affect reputation. You are now free to vote purely based on post content, without worrying about how your vote might positively or negatively affect someone's reputation score.
If there is any difference between the reputation on the main site, and the reputation on the meta site, that is because the reputation on the latter still needs to be synchronized.