Christian forums are not local churches where Christians are gathered with like-minded believers. Once you see that they are in fact battlegrounds between Light and Darkness, your expectations will change. Since there is free access to all people anywhere worldwide, you will find the whole gamut of beliefs from outright heresy to biblical doctrine.Iron no longer sharpens iron but seems to sever unity. What are your thoughts?
So what people should focus on is to study the Scriptures for themselves and "fact-check" the posts. If Bible truth is being presented, then agree. If not then disagree and show the truth from Scripture. The sad fact is that many well-known preachers and teachers have also gone off the rails, so those who want the truth must go to the source, and ask God to confirm the truth to them. If you are a genuine Christian the Holy Spirit will confirm what is true and what is not. Provided you love the truth against all odds.
Something to keep in mind is that many who post are not necessarily thorough students of the Word. Some are still learning, but some are simply digging in and holding to their false beliefs in spite of Scripture to the contrary.