I have to type all of Skald.
- I have to get to the ‘e’ in Lendervedder before I’m exclusive.
There are at least 15 Happys in the system. I imagine there are probably more, but the thing only puts out 15.
- Many begin with echo.
There is an Echo Seven Delta who has exactly one post from about 4 years ago.
Eight, including the space.
I’m in competition with The Hamburglar, who hasn’t posted since 2003.
Eight, that is “radicalp”. As you might imagine, there’s a couple other radicals here. I don’t know how to find out when they’ve last posted though.
3 for me.
As soon as I hit the ‘E’ it drops from 15+ to only me. 5 letters.
“Digital” gives me the max 15. The space apparently is ignored. “Digital i” is unique to me.
So 9, including the space.
'Warga" leads directly to me and only me, so - 5.
Some of these names which show up with no posts are spammers that have been banned — in case anyone is wondering.
I have to type 11 characters before I’m the only one in the list. Is that a record? 
5
meatr
The 7th’s letter is the charm. The apostrophe brings the list to just me.
At 3 or 4 letters my name doesn’t even show up.
4 letters
natural
natural born killer
Natural-J-Bankie
Natural1
Natural2us
NaturalBornFollower
Naturally Oblivious
NaturallyCurly
naturallyyours
naturalman
naturalmom
NaturalRed
NaturalTwenty
Natural_Gout_Remedy
nature girl
It takes 6 letters before I even appear in the list.
6 letters
Nature’s Call
nature12smiles
Natureboy
baturegirl
NatureMusic
NatureSpirit
Just three. ‘Lo-’, and it’s me. Can’t get anything for two letters.
I gotta go to 5, at 4 “drew” I get 15 different people. At drewt, it’s just me
Even five letters in, there were four options. Finally, “Sternv” left me as the only possibility.
There are 3 Intergalactics, I have to type 14 letters to get to unique.
Intergalactic Gladiator
intergalactic0
IntergalacticFootballClub
Are you counting the space? Cause I need 6 (Fear t)
sca - 15
scad - 2
scadi - 1
Seven character before it is just me - there are eight other BigDad + something.