In one of my first blogs, I discussed how and why I decided on using blosxom. I mentioned I did not yet know how to set up an digest mailing as a friend has. I wanted something that people could subscribe and unsubscribe to, and that would show the headlines of all items posted in the last month.
I do not (yet) know Perl, but I do know how to write shell scripts using grep, sed, awk, etc. I now have a digest script the runs once a month.