Kai Lord said:
http://dictionary.reference.com/search?q=pornography
Pornography:
1. Sexually explicit pictures, writing, or other material whose primary purpose is to cause sexual arousal.
2. The presentation or production of this material.
So while all pornography might not be erotica, all erotica is most certainly porn. As well as many beer commercials, music videos and so on.
Erotic
1 : of, devoted to, or tending to arouse sexual love or desire <erotic art>
2 : strongly marked or affected by sexual desire
Pornography
1 : the depiction of erotic behavior (as in pictures or writing) intended to cause sexual excitement
2 : material (as books or a photograph) that depicts erotic behavior and is intended to cause sexual excitement
3 : the depiction of acts in a sensational manner so as to arouse a quick intense emotional reaction
So, we can see here that, within the context of actual definitions, Erotica is related to the emotional state, while Pornography is related to the actual depiction of the act (your Dictionary.com definition also makes this distinction). I find it laughable that The Joy of Sex is construed as porn, but since you've brought definitions into this, I'll trust Webster and go with it.
At any rate, that which
is erotic is related to the feelings, desires, wants, invitation there of, and willingness to indulge in loving and/or lustful acts. Pornographatic
is that which is an actual representation of the act itself. This isn't a matter of opinion, but derived directly from the definitions above (personally, I find porn more related to wanton behavior driven by lust rather than love or, perhaps, even caring, but that's me, so irrelevant).
It's already been stated by one of the authors that this product is not the later, but rather is a set of rules ralated to the former. It is a book about including
sexuality into the game. Yes, that will
include sex. Yes, that will
include fetishes. Yes, that will
include sex magic. Yes, that will
include homosexuality. And it will probably also include a great deal of other things we have yet to hear about.
The point remains, calling it "porn" prior to even having a true sample of what it will contain (and the image included in the press release is no more pornagraphic than the picture of Lidda in her tight leather corsette) is tentamount to pre-judging the book based entirely on personal bias. Such judgement, after all, cannot be based on fact because, when it comes down to it, the only facts known are those which one of the authors herself has stated, which isn't much because she is still held to a degree by her NDA.