How to target geographical regions?

[WagerX]

Over at the "Casino Affiliate" camp, there's webmasters who have lost their US revenue and are now focusing on foreign countries. Keep in mind these are guys who spent years developeing their content and IBLS.. What they are doing now is buying up domain names with .uk, .jp, tw. etz.. thinking that their new domain name will attract more attention..

so is this true? Is it better for an established domain to change their traffic demographics OR start over with another domain with a region specific extension??

If I had my domain >>>www.mydomain.jp<< and wanted to concentrate on japan how would I market to japanese?

Any ideas or comments would be appreciated.

Cheers!