Well, contradictory advice here, both parts of conventional wisdom...

First, you should be very careful about buying tickets from anyone other than an official source (Dionysian or Ticketmaster) because of the risk of counterfeits and related scams.

However, if you're trying to sell extra tickets, there are indeed several places to try and get rid of them (at face value!):

• Jambase tickets section
• CraigsList
• PhantasyTour message broards
• rec.music.phish, through Google Groups

"Music makes practically everybody fonder of life
than he or she would be without it."
-- Kurt Vonnegut, Nov. 2002