This shouldn't be too bad to implement. I think we could go by the timestamp for when the profile was last updated. Every time a member visits a page, the status message is refreshed, so the timestamp would be refreshed. I'm setting estimated hours and taking ownership.
@GuiedGui I'm pretty sure it shows that based on your last active session rather thn actual login, so it'd be fairly accurate unless you're online for over 1 day with little short breaks at most
@banjo2 that's not a good indicator, imo. It just shows when the user last logged in, not logged off.
I thought there was something like that, but it might be borked.
That might be activity, but I'm not too sure.
Also, I have a feeling that it's supposed to be gated to only when you are friends with the person in question. It is hidden in a checkbox in your settings to show a section on your main page, and only then it still only shows your friends. Now, this may be what you're trying to change, but I just wanted to mention this.