I think roger ebert reveals a LOT of the plot of a movie. The first time i read his review of the dark knight and i thought "gee, whats the big deal with this review? he has revealed so many parts of the story!" Review of Transformers didnt help.
then i read his review for adaptation. and i was impressed. and i thought American beauty should be the real test, and he passed it. A very objective point of view but written with great wisdom.
But it did irk me that he tells the incident blatantly, really a dampener if you like to not know before watching. If secretly he thinks that revealing would make people happy then i would say its a cheap trick.
I reached his site because i was reading about alfred hitcock. i read about the "McGuffin" and i was surprised that there is a mcguffin in transformers.