I have multiple accounts. Some are lapsed for various reasons. Some are holding characters that I may recover in the future. I link all of my accounts to the same e-mail. I do this for many reasons. One is because I have zero plans on doing anything wrong where I need to hide who I am from CCP. The main reason is convenience.
When logging in today to resub one of my lapsed accounts (it lapsed about an hour ago) I noticed something I had never paid attention to before. Or, it may be that I had not seen it before. CCP has been adding to the web interface.
This particular area under Edit Account Information on the main account page also said "other accounts sharing: email address".
I clicked it and saw all of the account names linked to that. A very useful feature for losing account names and keeping track of things. What a nice little feature.
However, what caught my attention was a point of curiosity. Is this one of the steps forward to CCP figuring out who is playing? If I remember correctly, it was noted at some point in the recent past that CCP does not know who is who when it comes to accounts and that type of tracking was not in place. Doing something like linking my e-mail is super obvious. Having it in a nice, clickable link is a fantastic little bit of utility for me. It also means that it is a fantastic little bit of utility for CCP.
Sugar does something wicked against the EULA and its easy to go 'snip' and chain link everyone else that is also Sugar.
I don't think this is bad. While those who are doing things like botting at a higher level are not going to link all of their email addresses (one would think) more casual people will do rather glaring things like that without thinking. I do wonder if it is a side effect of CCPs ongoing project to connect various dots together, better.