When my pastor makes a "rule" in our operations as a fellowship, I submit to that rule as I submit to Christ, so long as that rule is not against the Lords word. One of the rules in scripture is that the "younger, submit yourselves unto the elder, Yea, all of you be subject one to another, and be clothed with humility."
Though SI is not a church, we all as contributors to the forum come under the "eldership" as it were of the moderators. Instead of thinking of this negatively, maybe you may consider that there is good reason, for love "Believes all things." That is to say, love (especially between brothers and sisters in Christ) does not presume that others have clandestine conspiratorial reasons for what they do. As "elders," the moderators of this forum have made this decision which came through much prayer and consideration on their part. They also let the community members know over time what they were considering doing.
The rules governing this forum make it one of the only forums I would ever post on in the whole of the internet. It gives me great comfort as a sheep knowing that there are shepherds who care about the welfare of those who fellowship here.
As Lew Wallace once wrote, "Better law without love than love without law." Fortunately here there is a real opportunity for both law and love when the guidelines are met with both approval and consideration on the part of those who post here.
Any real church worth their salt has rules for how they operate and function. Often times they have rules that govern them which many congregation members really may never know about unless they come up against the breakage of those things. Some of those rules and guidelines are the expression of discernment that the elders have concluded would make fellowship more beneficial for the members and often times those rules may not necessarily be biblically explicit but will often be biblically driven.
I can honestly say that these considerations of the moderators makes this often a pleasant place to frequent. Under their guiding hands and prayerful consideration many unfruitful conversations have been cut short. Unfortunately the typically unfruitful contributor plays the martyr in a tragically cliche' way and fellowship between those submitted to the authority over them in humility just go on to have another fruitful round of discussions.
I encourage you to consider coming under their rules and be chaffed for a while, it is good to be chaffed.