I like one thread from each poster. For one, I think it makes the board less "cluttered," and second, there are some reviewers I like better then others, and I'll tend to read all of their reviews, even if I don't really need to read a review for that particular meal. Like Crystal Palace's breakfast, I've been there four times myself, but if the writer is entertaining, I read it anyway.
I also like it when the thread is pages long that the first post has a table of contents, so that the reviews I still need to read I can find easily.