Rule 8 is about intent, not content. If your words are clearly intended to convert, rather than discuss, then you are in breach of rule 8. If you have come to these forums to tell people about what you believe, you don't always have to state it "as an opinion", but at least make it clear that what you're doing is stating your beliefs rather than attempting to preach or proselytize in order to win over people to your side. If you want people to agree with you, do it with reasoned discussion. Here is an illustration of the distinction:
EXAMPLE 1:
Thread Title: PRAISE GOD!
Original Post: Jesus is my saviour and the Lord is my shepherd! I am a devotee of God and he blesses my life each and every day, and he answers all of my prayers! I was once hopeless and lost, but now I rejoice in the spirit of the Lord for he has washed me of my sins! Praise be to God! If you want to join me in salvation, post PRAISE GOD! But if you don't, you're going to burn in hell forever! God bless!
EXAMPLE 2:
Thread Title: My story and God
Original Post: I embraced Jesus as my saviour and am a devoted Christian, and I feel God works in my life each and every day by answering my prayers. It started when I was in a dark patch in my life, but when I discovered religion it made me re-evaluate my life and I found forgiveness. I praise God, but I worry about others who do not, and it makes me sad to think that there are others who have not accepted God as I believe they will go to hell for it. I was wondering if anyone here wanted to discuss with me their reasons for accepting/rejecting the Lord, so that maybe I can either convince you to join me or, at the very least, reach an understanding as to why you choose to reject God and grow to a common understanding. Thanks for reading!
Note that these two examples are basically saying the exact same thing, and Example 2 doesn't really use the "it's just my opinion" approach that you're suggesting. The big difference really is that the first example is just a declaration of belief and affirming of the poster's position. It doesn't really offer anything to discuss or think about, it's just preaching. Example 2, however, contains all the same basic proclamations are Example 1, but uses it as a starting point for a discussion. Does Example 2 really come off as
weaker or
less certain in it's convictions than Example 1? I don't think so. From both examples we can conclude that the people writing them are absolutely steadfast in their beliefs and wish to make them clearly known, the only big difference is that one is attempting to explain and discuss while the other is not.
At least, that's how I see it. If anyone else feels that they can more accurately illustrate it, they should.