[Shtoom] blocking calls in sample scripts?

[mglover at logitel.com]

This is my first few days with shtoom (and twisted).  I've been looking at the
sample scripts, and shtam.py converts to WAV and then uses smtplib in what
looks like a blocking manner.

My understanding of twisted is that when you do something that blocks, you
have to use a deferred or you'll stop all of the (what's the twisted analog to
a thread?).  Is this just a 'this is a sample script and I didn't feel like
doing it right' kind of thing, or am I misunderstanding something and that's
really okay?

Thanks.

-mike