I would like to read some hard sci-fi novels, the more plausible from a scientific point of view, the better. I've read good reviews about Larry Niven and David Brin's books.
Of course questions asking for further recommendations are off-topic on Science Fiction & Fantasy but is there an SE site where it would be on-topic? After all there's a Software Recommendations SE site (with low traffic), so I was wondering if there was also a (sci-fi) book recommendation SE site.
If not, would it be impolite to ask (here on Meta, of course: not on the main site) about resources on the Internet where I could ask such a question?