Stack Exchange network consists of 180 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
I was just upvoted for a question on Meta, but there was no rep increase.
There is no reputation awarded for posts in the "child" meta sites (i.e. meta.webapps.stackexchange.com). The "reputation" is inherited from the parent site. But you will get meta-specific badges, though.