I'm an experienced user on Stack Overflow and Stack Overflow meta but haven't participated in other sites too much so far. Therefore I have a question before I start participating more fully on Japanese Language meta.
On SO meta, downvotes and upvotes in addition to their normal usage also mean agreeing / disagreeing with the proposition in the post (see for instance here: Voting on Meta is not just for (dis)agreement. Update the help center to reflect this):
Unlike normal Stack Exchange sites, Meta invites the community to discuss, debate and propose changes to the way the community itself behaves, as well as how the software itself works. On posts tagged feature-request, voting indicates agreement or disagreement with the proposed change rather than just the quality or usefulness of the post itself.
Does the same apply to Japanese Language meta?