It means someone who has joined chess com by your invitation or suggestion has mentioned your username in the joining process as the one who referred them to chess com.
It's a good thing, keep it up 
Resolved: What is a Referral?
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^ Showoff
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ok, so how do i send a referral?
The first step is to throw a large rodent at their door. Make sure it bounces, but not so hard that it severely injures the animal. It will need to be healthy for step 2.
Apr 29, 2012
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#8
On your own Friends list, right side column there is a blue box you can click on to Invite Friends. (your friends who are not yet members of Chess.com)
When you send someone an invite to join the site, they go through a joining process.
At one point during that joining process, they will see a question "How did you hear about the site".
They must choose the option 'Friend' then enter your chess.com username.
If they don't do this, or they skip past it, they cannot go back and re-add it later.
If they don't add you as the person who told them about the site, you won't get them as a referral.
If they do add your username as the person who referred them, you will receive a homepage inbox alert message showing they have joined and been added to your friend list, aswell as receiving a referral trophy.
If you didn't receive any alert or trophy, its possible they didn't add your username or didn't add it correctly during their joining process.
This isn't something we can go back and add for you sorry.
If that person upgrades to premium membership (trials not included), you then get 1 month gold membership added to your account. If you're already a premium member, then instead of the gold membership, you get 1 month extra time added onto the one you already have.
I found today that I had one referral on my profile. What is a referral? Is it good or bad? How did I get it?
