Mari Smith said today during a webinar she presented on recent Facebook changes that the social networking site will be eliminating these features on October 31, 2011. Evidently, Facebook found that these tabs were not used very often.
I can understand eliminating reviews since Facebook has made it easy to recommend places on their site. And I suppose the reasoning behind getting rid of discussions is due to the fact that Facebook wants to encourage more interaction with pages through comments and sharing.
One new change that has come about is the fact that you no longer have to be a fan to comment, like or share a post. As a result, it’s become more important ever for pages to produce great content so that material can get shared. With the new ticker on the news feed page, your page can get exposed to a much wider audience, IF your content is popular with your existing audience.
FYI – One other change that Mari noted in the webinar. As of June 1, 2012, Facebook will no longer support FBML. So, if you have any custom tabs created using FBML, you need to switch them over to iFrames by that date.