Apparently, LJ is so popular that they needed to control the amount of people signing up, so they created these codes. You can’t open a LiveJournal without a code. Which segues nicely into…
According to LJ, these are the code factors:
*** If you have a recently created account, then you are entitled to generate 1 code after you’ve had the account for a week.
Every month of paid time generates 1 code.
If you have made an acknowledged contribution to LiveJournal as a volunteer, you will receive 1 code for it.
For every 20 points you earn by helping in the Support center, you will receive 1 code.
If you have a Permanent Account, you can generate 5 new codes every month.
If you have an early adopter account, you have a base collection of 15 codes.
I have a paid account (it’s $5 for two months, not exactly breaking the bank), so that is where my code from. But now they’re all gone, gone, gone!