They're talking about Conjure* on the Purple Zone** at the moment and the current plan is for people who frequent the con to wear a small purple dot on their id badge to show they're also part of the Voyager forum.
Alas, not all can go (me for one) so an enterprising PZ'er put together a badge for the rest of us:
I'll have to stick mine on the computer desk, if I can find room.
* This year's Australian National SF convention
** The HarperCollins Voyager Australia website/forum
Simon Haynes is the author of the Hal Spacejock and Hal Junior series (Amazon / Smashwords / other formats)