As many open source enthusiasts are attending sessions and taking notes, quite a few of them are also checking out the Sun booth. Seen here is the hack center registration announcement and a stack of "Solaris Internals" books waiting to be distributed :-)
The Sun booth is located right at the entrance. The open source enthusiasts are right there - viewing the demos and getting to know how to participate in the hack center.
Of course, the enthusiasts also get to rub shoulders with Sun's open source stalwarts.
Seen below are participants checking out the schedule