You're avoiding the question about misleading your users.
If the majority of page views are generates by bots then the number of page views you show isn't even a ballpark figure indicating how interesting/visited the blog post is. It's simply a semi-random number depending on crawlers/bot activity and nothing to do with real human visitors.
If you were simply off by 10% I could accept your answer, but you seem to be regularly off by a factor 200-300%.
Just in case there was any doubt about Posterous not filtering out bots given that Garry hasn't specifically admitted it:
http://twitter.com/#!/richiepear/status/13809170130149376
Rich Pearson (VP Marketing - Posterous)
@imranghory No - we just don't filter out your own views
and search engine visits
Re:Are Posterous Fudging Visitor Statistics?
by kingsidharth on Sunday December 12, 2010 @09:36AM
(#1997133)
Real time or not. Misleading numbers are misleading. Being real-time is no 'cover-up' for a misleading data.As far as 'simple ballpark for how interesting or visited your blog post' is concerned. If a bit visited me a 1000 time and just 100 people read it, that doesn't make it interesting. Reporting bots is seriously no use.
These numbers are far from meaningless. At the end of the day the numbers reflect what our servers see -- they track something different from Google Analytics but they are useful as a simple ballpark for how interesting or visited your blog post was. Also, they're realtime, which GA does not provide.