I think there is no secret about it rather than make a contributory post to the forum and members. If you make a thread that is useful, after people finish reading, you might be lucky to get merit from the reader.
i have been making so many contributory comments and helping out individuals but i have never been merited for once.. I just come here and discuss about crypto because i have given up on the merit thing, no one notices he help i have been rendering when it comes to contributions