I have an official Sony PS3 Bluetooth Headset, one of those you clip on your ear (the second generation)...
I've used it with Skype, both on my laptop and on my phone, and it's awesome... but when I try to use it on my PS3, its volume is so low, it's like people are whispering to me, so much I don't even know if they can hear me or not.
In the settings, my voice only reaches the blue marks if I practically scream.
When I'm playing BF3, though, the little icon that's displayed when I'm talking is active even when there's a slight breeze.
Could there be something wrong with my PS3, since the headset works so well with anything but it?