There are thousands of apps in the Windows Store which are not special, but they still have hundreds of five-star reviews in gibberish from alleged users; an actual example is: "Hahahahahha, we got a moms up in here hahahhaaah any ways its a grew game I rate five cause it makes me smile wen I"m sad soooo ya 10000000% perfer this game I spelled perfer wrong hahahhahha.", resulting in an overall rating of 4.8-5.0 stars, which is misleading.
However, now it appears that Microsoft is working on finding and removing these "spam reviews" so users can identify whether an app is worth their time or not.
In 2013, a developer raised this issue via the Windows Dev Feedback UserVoice page, and now Microsoft has responded to it, saying:
Several features in this request are now live including:
- respond to review
- public response to reviews
- escalate to support which in a few cases can delete the comment if it violates the policy
- technology to detect and remove a large majority of the spam reviews
- how helpful is a comment.
The addition of these features should be beneficial to both users and developers as it will allow the former to determine whether an application is worth a download or not, and it will let the latter deduce the quality of their app.
Source: Microsoft via WMPoweruser