The MetaFilter Network LLC
is an Oregon-based company, which collects a one time membership fee from registered users, and makes enough money from advertising to support a few awesome admins, and pay for shiny new servers. Metafilter is a fairly high traffic site, and receives 11.5 million pageviews
from 3.5 million unique users every month.
MetaFilter would thus seem to meet any reasonble definition of a commercial website.
California's Online Privacy Protection Act
that company is based outside California, including overseas.
There is probably at least one Metafilter user in California, and thus, it seems reasonable to assume that Metafilter is collecting personally identifiable data on California residents.
Furthermore, a recent comment
by Cortex seemed to imply that Metafilter is logging the identity of users who author anonymous posts.
(I'm not a lawyer, but I am a privacy geek)