I'm not THAT old

The April 29th, 2009 "Weekly Haul" entry at Every Day Is Like Wednesday gets a special award for the first correct use of to pore over that I've seen on the internet in years.

To pore, as a verb -- almost always used in the form "to pore over" -- means to examine or read carefully.  It's a phrase most often used for books or other printed matter.  One goes to the library and pores over ancient tomes, or sits at home poring over the newspaper.

To pour means to apply something liquid or possibly powder, something that flows at any rate, onto or into something.  It typically implies that the the substance being poured is in a container and being applied at a controlled and deliberate rate, as opposed to spilling or splashing, but it also carries the implication that a large amount is being used, as in the colloquial "the director really pours on the angst".

To pour over a book will probably ruin it.