As long as the comments don't insult other Forum members. I think that's the bit that sometimes slips quite a few members' minds here (not talking about any specific threads, this is just a general observation built through years of being an active member here).
Many members get passionate about certain points - which is good (I certainly do) - however a line needs to be drawn at making negative comments about other members' character/personality/intelligence/etc.
eg. Someone says "I did blah blah" and someone responds with "that's stupid" is exactly the type of negative comment I'm referring to above and not hard to see how it attacks the first member personally. It's not neccessary, not nice, and in violation of the Forum rules, and if it were to continue we will see members not wanting to come back here anymore - and I don't think any of us want that.
No one