Yes, I picked up a copy at Nine Worlds a couple of years ago :-) (And I also know quite a few of the contributors!)

Editing now I'm home and not typing on my phone to add that I can't remember if it addresses age either - I think it might do, but I've actually only skimmed it rather than getting round t reading it properly. I think that's partly because I got it and then immediately went into a no-I-can't-be-a-proper-bisexual funk, but also because the structure of thematic chapters with quotes from contributors rather than individual essays made it feel a bit more serious and heavyweight than the individual pieces in the Bi-ble. I should try to get to it soon, though!