HELP, new career in it recruitment!!!

[Clippy]

Either it was Admin, or somehow Robin managed to do it without leaving traces.

If the latter, I bet it was by accident rather than design.

So that only leaves Admin.

Or, perhaps it is the way moderated posts work for new users when they wish to edit their posts - it doesn't leave a date/time stamp.

[administrator]

No, when I edit posts it shows up the same as everyone else. V strange indeed...