Who cares if it falls under some artificial definition
of advertising
or not? I'm sure you could find 100 dictionary definitions which
include what's going on, and 100 other definitions which don't.
Answers.com says "A notice, such as a poster or a paid announcement in
the print, broadcast, or electronic media, designed to attract public
attention or patronage." I'd say sitenotice qualifies under that
definition. Whoopdedoo, who cares?