How to avoid being the 303rd person to repost something in a few easy to steps:
a) Check the date of the cool thread you've found. In this case, its 12th November 2009, 12:29 AM.
b) If this date is more than a few days old, max, realise its probably been posted 9 times already. Do a quick search to confirm
c) Sit back and relax safe in the knowledge you've avoided a locked thread and a load of people saying RE RE POST.