NFC file transfer doesn't work between 2 Nexus 7

I have 2 Nexus 7, both up to date with the latest OS (stock).
For some reason when I want to beam a webpage/contact, etc., I can hear this "beam" sound but nothing is transferred. I checked both settings and both have NFC enabled.
This definitely used to work a while ago and I was wondering if this is some sort of a bug in the latest JB update.

Thanks

Hold them back to back, wait for the sound, then tap the center of the screen. You will get a beam sent message.

Sent from my Nexus 7 using Tapatalk 2

Jeez! Lol, I didn't even bother to look on the screen. Thanks