The list of marketing and advertising blogs has been updated. Now I've started collecting links to advertising agencies blogging. If you have a suggestion, just drop me a line.
Hi-Res! London has Hi-Res! Feed.
Mediacatalyst blogs The irresistible force.
TBWA\Lisboa publishes Tblogwa.
Proximity and BBDO Worldwide have set up "The Lab", which unfortunately isn't very much updated.
From San Francisco, advertising agency Butler, Shine, Stern and Partners blogs on Influxinsights (thanks Ed!).
German New Media Agency "Aperto" (Berlin) blogs about eBusiness related stuff (thanks Christian!).
Wieden and Kennedy London blog at Welcome to optimism (thanks Sandeep!).
Missouri ad agency Sullivan, Higdon & Sink is both blogging and podcasting at American Copywriter (thanks Bruno!).
Another agency from the US, IdeaMill has a blog about ideas (thanks Michael!).
Reason inc. is behind the Being Reasonable blog (thanks Marc!).