If you've been online in the last couple days, you may have noticed that LJ
almost went ahead with a code push to change gender prefs (in your profile) to a single Male/Female choice.
synecdochic has a good post about it
here.
I'm glad that it got headed off at the pass -- and I'm also glad it came up, because a)it means the new LJ management team understands it's a big deal and,
much less importantly, b) I (as a cisgendered woman who has the privilege of not paying attention to such things) now know that LJ specifies what advertising I see based on the gender I tell them I am.
I was, indeed, seeing a lot of dieting bullshit ads.
I've now set my prefs there to "unspecified". I'm interested to see what ads for people of unspecified gender are going to look like.