Tweetdeck

Download AIR & TweetDeck - http://bit.ly/getair & http://bit.ly/thedeck

(as of this posting AIR is version 2.0.4 and TweetDeck is version 0.35.2)

Open-up Terminal and type:

cd Downloads/

chmod +x AdobeAIRInstaller.bin

sudo ./AdobeAIRInstaller.bin

enter password

agree to Adobe Air installer setup license agreement

Once Adobe AIR is installed, right click the TweetDeck air file.

Select 'open with other application'

find the Adobe AIR Application Installer from the list

-OR-

choose 'use a custom command', select browse

from the list, choose Adobe AIR Application Installer

on the screen which displays, select Install

for installation preferences, add shortcut to my desktop and start application after installation are checked

for installation location, default value is /opt

agree to TweetDeck license agreement (looks vaguely familiar to the Adobe AIR earlier)

insert password at dialogue prompt

sign into TweetDeck and enjoy!