Ever since it opened the Apple iTunes App Store has received criticism over its review system, as initially Apple allowed anyone to leave a review on any Apple iPhone app as long as they held an iTunes account.
Harsh reviews could be left even if the reviewer had never used the application, competing developers could also leave harsh comments to drag down an iPhone app’s overall rating and thus artificially inflating the rating of others.
Well Apple has taken steps to correct all that by purging all non-user reviews and is now adding a new functionality to the iTunes App Store whereby apps can be reviewed by version so users can see reviews and overall ratings for both “all versions” and “current versions.”
Source — appleinsider