When I want to make another account, all the usernames I can think of are already taken! Like FLLFFL, already taken. Nobody I know was ever named FLLFFL. And most of the other username I think of are already taken. Is this a problem, or what?

It's not a problem, It's just the username is just taken by someone.

But who? This person's probably dead, because you're not gonna see anyone with FLLFFL.

I heard that if the user has been inactive for 3 years, you can get his name by getting a name change.

Usually if the username you want is taken, you would just create an account with a slight difference but still slightly looks like what you originally wanted.

Once you get 100k in toricredits, you can choose any name you like. And if the account has a name you want, it needs to be inactive for 3 years, like slender22 mentioned.

Well, I don't want it to be a 'slight change'. I want it the way it is. But who knows how long this FLLFFL has been inactive.

http://forum.toribash.com/member.php?username=FLLFFL
Not even 2 years inactive, unfortunately.

Well, you have to wait until august... Or you can try your luck with the Fish ( the guy that can change your name ), try appel via PM.
If don't work, take calm dude, a lot of classic and good names still inactive.

You can add dashes to the name if that doesn't work.

2 years will be enough. Depends on his past activity. I think admins won't have any problems with that nickchange. (for 100k obviously)