Credit for referrals that didn't use referral link?

Let's say I send someone to Linode and set up their server but I don't send them an affiliate link because that lowers my credibility–especially when courting a new client. My question is, assuming they stay on with Linode for 90 days, is there a way to check up on the account names and then get credit for those people that don't show up as "completed" that I didn't give a referral link?

Right now all I see is "You have 2 total referrals: 0 completed ($0.00) and 2 pending" so hopefully when they convert to completed the referral system shows the account names because I'm thinking I may have referred more people from my website. I know for sure I have referred 3 Linodes so far to 2 clients--not sure if these are the same 2 pending or whatever. Regardless, I would like to know for future reference if I absolutely need to use a referral link for referrals.