By default, anytime you take a screen capture in Mac OS X it will save the screenshot file to the current users desktop. You can adjust where Mac OS X saves a captured screenshot to any other location, here is how to do this:

Launch Terminal and use the following syntax:

defaults write com.apple.screencapture location /path/

For example, if I want to have the screenshots appear in my Pictures folder, I would use:

defaults write com.apple.screencapture location ~/Pictures/

To have the changes take [...]

Skeuomorphisman refers to an element of design or structure that serves little or no purpose (definition courtesy of Wikipedia) – and for some God-awful reason, some Apple UI designers have decided that they want lots of UI objects to be skeuomorphic.

Cases in point – iCal and Address Book in OS X :

Fortunately there is a free tool called Lion Tweaks which makes removing the leather appearance from the interfaces of Address Book and iCal [...]