Vimeo - The bar you mouse over will grow taller so you known when to click.
/via Patrick M. Lozeau

Vimeo - The bar you mouse over will grow taller so you known when to click.

/via Patrick M. Lozeau

Chrome - Status bar shift down with the cursor when it is hovering a link near the bottom of the page. After a few seconds its hows the entire URL.
/via good1am

Chrome - Status bar shift down with the cursor when it is hovering a link near the bottom of the page. After a few seconds its hows the entire URL.

/via good1am

Svvply - Hovering a shop item shows information intuitively. 
/via @andrevvm

Svvply - Hovering a shop item shows information intuitively. 

/via @andrevvm

(Source: svpply.com)

Reeder app - website makes use of some nice CSS3 transitions.
/via @guigoguido

Reeder app - website makes use of some nice CSS3 transitions.

/via @guigoguido

Dribble - Hovering a persons name or avatar affects the hover state of both.
/via @guigoguido

Dribble - Hovering a persons name or avatar affects the hover state of both.

/via @guigoguido