Is it possible to tweak our genome to remove aging?
You can use this to tweak your website - for example, if "singing birds" is one good term, and "bluebirds" is another, then you may make your site rank jump by grouping the words "singing bluebirds."
Whether you want to see dramatic change, tweak your current style or are just wondering how these celebrities style will look on you, these various actors, actresses, and singers can certainly help.
For beginners, the need to tweak some of the resulting code from the visual editor and the ease of switching from visual to code editing promotes a very quick HTML learning environment for beginners.
It's worth noting that more can be done to tweak brightness using external programs - ones that are popular for bona fide reasons.