Valve has introduced a new feature on their PC platform called Steam Reviews, whereby the Steam community can rate and review titles and share their thoughts with others online.
The feature should eventually evolve into a community "meta-score", where review scores will be collected together, much like Metacritic scores are now, and added to game pages. Due to the evolving nature of PC gaming, with content updated and added over time, Valve are looking at how to best present the data, but it's likely the most current reviews will feature more prominently on game pages.
Players who have previously written Recommendations for their friends will find that these have now been upgraded to reviews, so this feature effectively replaces that one (although updated Recommendations will still be visible only to friends unless marked visible to the public). More details can be found here.