This is the only one I know of...
Try here: http://www.cityofheroes.com/communit...iend_back.html
Quote from site: What’s it all about?
Here’s another great reason to get your old friends back into the game! Invite a friend to come back* to City of Heroes®/City of Villains® and split a FREE 30 days of credit** to your City of Heroes®/City of Villains® accounts! Read on for all of the details."
EDIT: according to the site, your friend will have to pay for 1 month by credit card, or use a 30 or 60 day time card and needs to enter the code from your referral when reactivating. once they activate and enter the code, you both split 30 free days of game time. So they'll get approx 45 days of playtime by paying one month. Their account needs to have been inactive for 90+ days in order for you both to be eligible for the free time. Read through and follow the directions in the link above and you shouldn't have any problems, just be sure to give your friend the details as well. If they don't enter the code from your referral at the time they activate, the offer will be lost.
An acquaintance of mine who used to play has asked me if I have an "invite them back" code... I assume he's wanting a code to give him time on his actual account rather than a code that will open a new trial account.
Anyone familiar with such codes and have any idea where I could acquire one for him?