In this case I am talking about this feature request on MSE.
The feature request was last active 2 years ago and 610 people have seen it. I think that this question had too small an impact and I consider this topic important.
I upvoted it, so far I am clear.
What should I do now?
Should I post a new question/feature request that is similar (I do not think I should)?
Should I comment it (which will probably not change its impact drastically)?
Should I give another answer with my example? (Basically I have another example of a question that might make sense to be posted on https://security.stackexchange.com/ as well as on https://stackoverflow.com/. It is a security related programming question: "Can I replace all system calls in the system call table on forking?". Now I know I will reach many more people who might know about this on Stack Overflow, but I think it makes more sense to post it on security.stackexchange because of the details of the question and the security implications that interest me very much.)
Also I feel like doing something wrong by reviving it (e.g. annoying people).
Sidenote: is meta.stackexchange.com the right place to be discussing this?