How do certain older users have punctuation in their name?
There are 10 known existing users that created their accounts a long time ago when punctuation was allowed in usernames. The symbols were apparently only allowed at the end of usernames. Also, there are 4 GameSpot users who had punctuation in their GameSpot names (other than hyphens/underscores) who have logged in on GameFAQs and now have GameFAQs accounts with punctuation.