Ttracking Invite Codes

[whenyougetwork]

I'm not sure if this is the right to place to ask this, but I have a question about invite codes... not how to get one, lol, but instead, what happens after you give them away? Like, are they trackable? If a couple weeks from now I forget who I gave them to but am struck by an attack of OMG NEED TO KNOW, will it show up in my account info somewhere? Or is DW tracking them somewhere (privately), charting who each user invited, and who they invited, and who they invited, and so on and so forth? IDK. Just thinking that data might be interesting (to DW, anyway) at some point, later.