Maybe if they added more earnings alternatives besides the traditional faucet, like micro jobs offers, it would be already an extra incentive for new users to stay more time on the platform, what would also boost the referral program. What happens right now is that common users who are trying to make some extra income online see no point in claiming 4-5 satoshis every hour and dice or slots aren't enough to keep them active, as they lack money to deposit and play. Promotional codes shared at this forum thread or social medias to give users extra rewards would be also an interesting bonus to attract more members to freebitco.in.
While adding microjobs might be a good idea, I don't think it really fits in their 'business'. Nowadays it is just very difficult to find new referrals on freebitco.in as it is the oldest faucet around and the most popular one. Finding referrals, keeping them active is always the challenging part (on every site). On freebitco.in you also have the opportunity to share some of your commissions with your referrals, so that can be one way to keep your referrals active.
It's hard to find new referrals, but once new features are added, there are good chances many of those old users will come back in fresh new accounts, because it's common to forget passwords and stop using old email addresses along the years, so they have no choice besides creating a new account through a new referral link.
Furthermore, there are always potential referrals around: many people who were children when freebitco.in was firstly launched are developing their interest for crypto currency universe only now, so it's a perfect time to refer those youngsters to the site.
I think it's harder to refer people now because the old platforms we were used to share links aren't efficient like before anymore. I mean mainly PTC sites which are completely dead and facebook which is infested with scam earning offers, so no serious person pays attention to what is posted there anymore.
