The list of a community's discussions shows the following columns: Title, Author, Likes, Bookmarks, Replies, Views and Latest activity.
In the list for the SAP Sybase SQL Anywhere community the "Likes" column shows zero for all the discussions, in spite of the fact that I have clicked "Like" inside more that one discussion, and the green "Liked" number shows 1.
I have also clicked on the BookFace "Like" icon, and clicked "Exceptional" on the Rating, and clicked "Like" on all the replies.
Is this a spam prevention thing? (doubt it)
Or an artifact of batch processing? (probably not)
Or am I missing something obvious? (always a good bet)
Or does one have to be liked first, in order to like someone else? ...well, that would kinda mimic real life 
UPDATE: Clicking on "Like" doesn't just make the green "Liked" number go up by 1, it also seems to instantly increase the author's "Lifetime Points" by 2, so I don't think there's any deep issue here.