[cb1118]

well, it's true that the most possible way is to go to the old address and check with the rental/property sales record.
**there must be a new contact address/phone number record to follow up.

(ask a private investigator to help)

[xironimoh]

Try to search over the online services asuch as www.ringo.com , friendster.com or hi5.com these are easier to locate someone around.