Ah, the delights of online hovering. Many times, you can hover your mouse over a word or phrase or spot on a page and hidden information will be revealed. The trick is knowing what the info is, and where it's hidden. With Tumblr, you can hover your mouse over the upper right-hand corner of a post, which will cause it to flap over into a little dog-ear. A box will also appear with the words View post and the time it was published [source: Tumblr]. Click on the dog-ear to read the original entry.