Take a company with people in both US and Europe.
Add in mail systems that don’t recognize other languages’ reply prefixes (“Re:” and “Réf:”) and so omit adding a new one when doing a reply.
Mix in a long e-mail thread.
And you end up with an e-mail message that looks like “Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Re: Réf: Performance Issues”
A thing of beauty. And sort of a catchy tune, too.
Heh, I see that all the time here, too.
The goofy thing is that it’s behavior that would be trivial to fix, but nobody seems particularly interested in doing so. Rrg.
Depending on your mail client, it may suddenly start sorting such messages under “R” rather the core subject name. Double-rrg.