I never noticed this before, and it may be the correct behavior in context.
For Blog Posts, the "Like" counter just counts the likes on the main post.
For Discussions, the "Like" counter also counts all the likes on the comments.
Not a complaint. Just an observation...
kmikemoo - sometimes when there is a topic of interest to me, I'll click on the like counter to see who else is interested.
A recent discussion that you participated in - Insight why display fails with buffer board had 46 likes, but only showed 4 of us that had liked the topic. Anyway, just caught my attention enough to think about it. I guess it was a rousing discussion 
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