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I think the AAM community, like any other community, has elements that can either appeal or repel, depending on one's preferences or sensitivities. It's perhaps a reality of life that one can't have everything as one would like it.
The main advantage of internet-based communities, however, is the freedom to "move" community if the overall experience feels negative.
That said, I feel users should be given a certain latitude to express an opinion or vent their unhappiness/displeasure without having to justify their every word.
In terms of AAM's continued popularity, I presume that the moderators can gauge the popularity of the site by measuring statistics for such aspects as:
Number/frequency of "hits"
hits per user
return hits, etc.
The information would surely offer more tangible evidence of where the site's going than the occasional negative comment posted here.
However, it might be an idea to create a "suggestions/feedback" forum (is there room for one more?) in which issues could be raised and debated. The usefulness of comments (such as the original of this thread) could be measured in terms of the support it attracts from other users.