Ideally the posted opinion will have some backing of stated facts, insights, or assumptions. The quality of this board depends on its participants offering something of value, whether it be news, analysis, or considered opinion. Good (insightful) questions are always welcome. Having a high-quality board is a goal, and (being human) we often fall short.
Agoracom provides a wonderful forum with posting history. It behooves the newcomer to 1) read, understand, and abide by the rules 2) read the board to understand the "lay of the land" and 3) read the top-rated previous posts. Oh, and there's the company web site, where the official information gets disseminated (on occasion). PM's (private mailings) are available to avoid cluttering the board. A wise person does a lot of listening before speaking.
If all that research seems too much to ask, then please consider that your time and energy may be better invested elsewhere?