Forgive me if the following is a tad incoherent; I have fairly strong feelings about this issue, and my mind's been a bit all over the place as I try to get what I really want to say down with the bare minimum of flippancy and sarcasm.
It has long been netiquette that the use of caps is YELLING. The only exception, as far as I know, is when someone uses internet slang such as LOL, AFAIK, etc.
The use of caps=yelling is not new so for the life of me I don't understand why people persist.
What is common knowledge for one, or even for many, is not necessarily common knowledge for all; different internet communities will have differing standards and expectations*, depending on numerous factors ranging from the average age of their membership, to real-life cultural background.
I can understand that people may not like it (I personally find it to be unsightly and distracting), especially given the range of other options available, but this feels a little like people are making a mountain our of a molehill to me.
Speaking personally, I feel that conext matters in situations like these - sometimes, it may be ambiguous as to whether a poster was intending to yell - in others, the context can make it fairly clear that they were being emphatic. Naturally, though, people have gut reactions to these things, and can't help feeling the way they feel.
On that note, my feeling is that that this
no caps unless you want to be gagged.
is a somewhat extreme response to the issue at hand.
*As the other replies in this thread have shown, the feeling from E-Hell is that they would rather not be "yelled" at, and posters joining the forum should be made aware of this fact if they want to integrate smoothly into the community.
Personally, however, I feel that presenting it as an essentially bannable offence is taking things a little too far. Would a polite, yet high-profile request to avoid it not be more reasonable?