Nearly everyone is familiar with Yahoo! Hot Jobs, Careerbuilder.com, Monster.com and other career related websites, but you must be very careful when you are re-directed to less familiar territory.
Be sure you stay away from websites that do not allow you to close your account, unsubscribe from their services or allow you to delete your information.
Be especially weary of sites that ask you strange information such as your cell phone service carrier. If you are able to enter search criteria, try your home town search first. If after you search for jobs in your home town you see ads from Japan or other countries. Get out!
The most suspicious sites are those with the most benign sounding names like "career-networ.com"
Career-network.com showed me ads in Tokyo japan when I entered a search for "Springfield, IL." They also won't let me access my profile to change anything. Stay away from that site at all costs!