It's a reference to a now purged post by peterpeter listing a limited number of categories for types of posts in this forum. Post type #9 was, I believe, "look how rich I am", which is now sometimes used to label people's 1B and 2B threshold posts.
To the OP, grats. 
Blue
American Steele: 50 BS/Inv
Nightfall: 50 DDD
Sable Slayer: 50 DM/Rgn
Fortune's Shadow: 50 Dark/Psi
WinterStrike: 47 Ice/Dev
Quantum Well: 43 Inv/EM
Twilit Destiny: 43 MA/DA
Red
Shadowslip: 50 DDC
Final Rest: 50 MA/Rgn
Abyssal Frost: 50 Ice/Dark
Golden Ember: 50 SM/FA
ah. I recall that post but didn't pay attention to the numeric listing.
Was my "Huh?" post one of the categories?
Paragon City Search And Rescue
The Mentor Project
Started really getting into the market a month or so ago because AE has got everyones attention. I started at 1 mill and gently worked my way up salvage to 60 mill or so then started lowballing end mod recipes (who dont use end mods). I do some pvp so i got one of every pvp io while they were cheap and decided to use to my advantage.
First #9