Permanently Disable the OS X Bouncing Dock Icon EffectS  Have
you ever been busy getting work done when a random Dock icon
starts bouncing up and down, begging for your attention? The
Switching To Mac blog writes up how to completely disable the
often distracting effect.   Readers will probably note that if
you really want to concentrate, you can always close your IM
application or use a full-screen, distraction-free environment
like previously mentioned Writeroom, but it's a useful tip if
neither of those options are available for you.  Hit the link
for the full walk-through, or learn how SelfControl blocks
internet distractions, and Freedom temporarily unplugs you from
the internet for some distraction-free working time.