I just noticed some identity mimicry going down. Adobe CS4:
versus the last.fm logo:
It looks like Last.fm updated their identity from an older version with lighter type (http://blogs.zdnet.com/open-source/images/lastfm-logo.jpg) but the "as" mark has remained a key component. It works as their stand alone mark as well so I was surprised to see it in the CS4 "Shortcut to Brilliant" statement.
Is it accidental or intentional? The world may never know...