
I was rearranging my Mac Dock and I found this nice article about “Adding Spaces to the Dock”.
To add a Blank Icon (Space) to the dock in Mac OS X, open up Terminal.app and enter this. Enter it as many times as you want spaces. Error on too many.
defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="spacer-tile";}'
killall Dock
To remove them, just drag them up and out of the Dock like any other icon. To move them around, click and drag.
Source: Add Spaces to Dock in OS X

Transmit, the popular Mac FTP / SFTP / Amazon s3 Client version 4 is out with a near-total rewrite, one brand new interface, over 45 new features, up to 25 times the speed, and one very cool surprise, According to Panic.
You can get a full version for $34 or an Upgrade for $19 at Transmit website.
Terminal windows are usually pretty boring, but you can make them more personal by adding a welcome message and changing some colors.
To do so, open your terminal under Applications –> Utilities.
Then type : open -e ~/.profile (The file will open in the graphic text editor)
Go to the end of the file and add the red text:
echo -n “Current Time: “ (To Show The Current Time)
date
echo “Disk Usage:” (To Show the Disk Usage)
df -h

Say hello to the MacHeist nanoBundle. It’s the same bundle of quality Mac software that you know and love… but it’s entirely FREE.
Download it. Enjoy it. And tell your friends about it, because it’ll be gone in under a day, never to return again. Grab it now!
Grab one while it last

This App make the finder showing Hidden and System files.
If Hidden files set to ON then it will turn it OFF.
Very good to anyone how works with Apache and needs to modify .htaccess files
**** Update: One of the readers brought to my attention that the version I posted on the site doesn’t supported by Snow Leopard.
I already fixed it and will upload it soon!
* Thanks To David
Download Here: Hidden Files Control (Free)