This does three things:
1. Establishes you as an authority on both this specific topic and the entire niche.
2. Helps ensure that you add real value and are helpful with every post you make.
3. Increases your reputation within the forum (both among members and moderators).
Let's say I'm an expert in mass email campaigns. In that case, this post would definitely be one where I'd want to add my two cents:
2. Find the latest topics to reply to.
Newer topics receive more initial views and user engagement, leading to greater visibility. And greater mom database visibility leads to more traffic to your site through your do-follow backlinks.
The goal is to have your answer as close to the top of the first page as possible.
Now you can find the latest, most relevant posts in a few ways:
First, you can log in to the forum every day and check the relevant subforums for new posts.