This post is mainly for newbies, but I guess older members can take the advice too.
Don't just create a topic for creating's sake; create it because you want to learn/know something, or you're passing on information or news.
Most times, I see topics by lower-ranking members about something they don't understand, and there will be answers and solutions to that problem in the comments, but there is no follow-up reply by the OP. It leaves me wondering if the person actually reads the replies to their posts. When you read the replies, you will learn more or have more questions.
Yeah this is very encouraging because is a good way of learning but however in the understanding aspects of it the person could have already gotten the purpose of there question through some replies that touches the exact thing they were lacking to understand so if we also think about this, is a good reason why you might not see the Op replying to some persons which have contributed to what they were saying, meanwhile it also defers from individuals because some persons even if they have answered there question they would still write to acknowledge the clarification but some would respond in different ways so actually it doesn't really matter so long the main thing which is learning has been comprehend.