Okay, I was going to paraphrase what I remembered, but then got interesting in rereading the actual stuff, so went searching for it again, haha. It's a bit less, erm, "academic" than I remembered, but here you go:

http://carenejeans.livejournal.com/79239.html

And here's the pertinent porn comment from a different post about the male gaze and ways of seeing and the way women see themselves, etc., etc. Not exactly about slash, but it's still a really good read, if you have the time: http://norah.livejournal.com/263175.html?thread=3482887#t3482887

*bookmarking these for myself before I forget again*