Reasons to use the Search function

Not limited by zone; Search entire server for desired jobs in level range

Quickly assemble a team to a remote location without having to travel there first


Reasons to Shout

People may be Anonymous (FFXI feature which will probably make its way to XIV)

People may be zoning or just logging in at the time of search - It doesn't update in real time

If no one is seeking, it's a huge list to sift through during peak times looking for a specific job

There are less than 500 people on each server and you know they're all in Ul'dah anyway...


Each has its advantages. Use 'em in tandem. Having 1 or 2 party members help you shout from different zones maximizes shout potential.