A little more detail from CBS5 in SF:
http://cbs5.com/topstories/local_story_334230019.html
[snip]
" ... The family was expected at a bed-and-breakfast in Gold Beach, Ore. on Saturday, Nov. 25. The hotel said Kim called three times to report delays due to bad weather.
They made it to Portland the following morning, then vanished.
The family was expected to return to San Francisco on Monday.
Police say both James and Kati Kim failed to show up for their appointments on Tuesday, and co-workers at CNET are worried for the family's safety.
Investigators say the Kims are known to keep in touch with their friends and colleagues daily by phone or e-mail. ..."
[snip]