I understand. But obvious doesn't belong to this
section (obviously). ;-)
This is supposed to be obfuscated.
The message is less important than how you manage to
it. Look at the message all (sometimes not much
more obfuscated than your own) the others print: "Just
another Perl hacker". Frankly, that isn't an interesting
message at all.
The trick in your code is that you count the delay
as an offset to Jan 1, 1970. So you could get the
difference in month, years, etc. with very simple
calculation (none), since everything is done by
localtime. That can be
useful to others, and would be better explained in a
section like Snippets or Cool Uses for Perl. A lot
of people are suspicious about obfuscation (I wonder
why.) and might not learn this trick if it's hidden
By the way, you should get a username. You'd get
more out of the site if the site could remember you.