Generally pretty flexible.
Timezone: I'm in an EU timezone currently, will probably be in West Coast US later this year. I'm generally available between 8am and 10pm but fully expect occasional odd hours (unplanned downtime event and major software releases!)
Payment terms: Negotiable
Preferred communication style: completely adaptable; I generally spend lots of time in Skype - both chat and voice; using products like basecamp; various wikis; the Google Docs/+ omni-verse; or just plain email.
Travel: I generally enjoy travel and am open to on-location work for up to 3 weeks at a time. I've lived abroad and have worked in many countries and quickly adapt to new cultures. I speak intermediate Spanish.
Time allocation: part or full time is ok; may be limited to part-time if I have another part-time engagement running