rogerd - 6:21 pm on Jun 10, 2011 (gmt 0)

I guess that raises the question: is it better to focus all likes on one page, or let users like many pages?

I'd guess if your blog/site has regular visitors who often read your new content, they would keep liking the new stuff. That would let one individual give you dozens of likes over time, with each one appearing in his feed and generating clicks.