On a web forum I am admin on, a user opened a DM a week ago titled "Google Notebook LM", someone else had shared a generated podcast thing that summarised the view of the forum on a particular subject, and it called out the usernames of someone who had strong opinions.
In response, another user ran with this and asked for a podcast to be generated summarising everything that was said by the user, their political views and all their hot takes.
Erm... uh-oh.
The use of real identity, the use of the same username across multiple sites, now makes it trivial for things like "take this Github username, find what sites the same username exists on, make a narrative of everything they've ever said, find the best and worst of what they've ever said"... which is terrifying.
I've said to the user the same old line we always repeat, "anything placed on the internet is effectively public forever", but only now are the consequences of this really being seen.
The forums I run allow username changes, encourage anonymity as much as possible, but we're at a point where multiple online identities, one for every site, interest, employer, etc... is probably the best way to go.
I notice on HN that there are many accounts that seem to register just to comment on particular stories and nothing more, and the comments are constructive and well thought out, and now I wonder whether some are just ahead of the curve on this — obscuring the totality of their identity from future employers, or anyone else who might use their words against them.
It feels like our lightweight choices in the past will start to have significant consequences in the present or future, and it's only a failure of imagination that is delaying a change in user behaviour.