In jobs.stackoverflow.com most of the jobs are from USA and UK. Will careers.stackoverflow.com have similar employers locations?
What is being done to encourage employers from other countries to use this site?
This is intended to be a worldwide service, and all of our location fields are fully world-aware, so yes.
As to how many there will be, I cannot say, but it is our intention to be worldwide.
(with the inevitable caveat that we have no immediate plans to localize the UI)
update: employer search stats now available: