Marco had one that was pretty scathing back a little while ago. But I'm guessing he's considered to have some bias.
Re:Why I Chose Posterous: a Quick Review
by jacobscott on Monday September 15, 2008 @08:04PM
(#305237)
link :)?
Re:Why I Chose Posterous: a Quick Review
by unalone on Tuesday September 16, 2008 @12:14AM
(#305412)
http://tumblelog.marco.org/40558829/sad-trombone-beats-tumbl...
It's more anti Techcrunch than it is anti-Posterous, though.
I like the intuitive autopost-to-twitter, works well for me.