[Greenthy]

What are u guys talking about, it's explained in the first post:
Priority > twitter/facebook >= regular sign-ups

How it exactly works is not detailed, but that shouldn't be a major concern.
Say it's like 80% prio-users per wave, 15% and 5% priority-levels one down...
That'll still mean your average vet will get in first.

Even if it's 100% priority users first, with the wave system in place it'll still be up to luck how much earlier u get in as a vet.
With amount of factors going into your possible spot, the way it exactly works will not influence it largly. (Unless they break their word and go like 20% prio-users, rest = free for all random)

edit: apperantly need to F5 before posting ^^