Collecting
StampCircuit.com - http://stampcircuit.com/
The virtual meeting place for stamp collectors, dealers, auctioneers and anybody who shares this great hobby.
Philatelism.com - http://www.philatelism.com/
A resource for passionate and not-so passionate stamp collectors who wish to learn about stamps of the world and, in the future as the site progresses and comes to age, connect with other fellow collectors.