Any guesses? Google tells me:

 

NTA a Star Trek geek?

http://en.memory-alpha.org/wiki/Medical ... -delta-one

 

Partial to a WI airport?

http://www.airnav.com/airport/4D1

 

Maybe NTA likes jets?

http://en.wikipedia.org/wiki/File:USMC_ ... ray101.JPG

 

So, what exactly IS 4D1?

That's easy...

4 Delta 1

 

4 = IW4

Delta = Milestone

1 = 1

 

So its IW4M1?

 

or...

 

Some random thought I had over a year ago.

 

+1

Some random thought I had over a year ago.

sequence4D1

Yup, I remember

Wasn't that the password to the pT5 April Fools' release archive? I seem to be slightly forgetting, might just as well be it was the channel password for #refint back then.

It was even before. That was the password for steam_api.dll source code

It means four delta one, durrrrr.

I love how NTA responded in the first reply and everyone just disagreed and came up with their own stupid ideas.

It means four delta one, durrrrr.

What an epic bump..