Cron jobs - redirecting output question

[Phil Holmes]

One of the cron jobs on the lilypond website is this:

$HOME/lilypond/bin/make-website.sh > /dev/null 2>&1

I understand that this means that all output is sent to the null device - 
i.e. discarded.  Is there any reason not to send it to a file, to aid 
debugging should there be any problems?  My thinking would be that the 
filename wouldn't change, so it would be over-written each time the script 
is run.

--
Phil Holmes