I've been watching this very interesting thread for a while, but I'm not quite sure where Sasha is going with her comment about tags.
I agree with Myiege. I also read the tags. But in my mind, tags are used more to find the type of stories you ARE looking for, instead of warning readers away from stories.
Unlike SOL, GA doesn't have tags for subjects such as incest, beastiality, cannibalism, etc, because they are usually in violation of GAs content rules. GA focuses on providing quality gay fiction, therefore it is not an "anything goes" type website that needs that type of extensive coding.
In regards to "Home Grown" it was not the tags that turned me off of reading it, it was the molestation and incest warnings. So I think readers still know what they are getting into, even if they ignored the tags. But if you write anything that is taboo, whether you agree with the reasoning behind it or not, I think the writer should be prepared the accept that not all readers are going to love it. Of course, that can be said for almost any type of story, but with taboo subjects, especially.