At the age of 45, Gwyneth Paltrow is definitely entitled to speak about sex. She actually speaks about threesomes, tantra and porn. She, together with some specialists have put together a sex issue that explains many aspects about sexuality.
This is the link where you can find more information about various techniques that she promotes when it comes to desire and intimacy and how you can reach another level of making love.
If you ask me the topics talked about are so basic, but at the same time very important because communication is key and she basically promotes that.