You don't categorize a thread as spamming because it hasn't received some comments. Most times why that happens is because those thread's what's discussed are of interest to a very few number of users or probably it demands some technical replies that not everyone has  information about.

One thing I can advise you op, as a newbie don't jump into discussions you know you have little or no knowledge about. That's how spamming replies begins. You mustn't be found at every corner or board discussions. Understand and know where your strength lies and build on it.