[simonh]

Who knows, but they'd almost certainly be different readers.

Not everyone uses an RSS reader and people forget to check blogs. I have most of my favourite blogs bookmarked, but every now and then I come across a blog I used to read occasionally and just forgot about, or end up googling for a blog or web site I vaguely remember seeing once.

There are a few online 'magazines' I read published in PDF form. I really wish they'd send out an email when a new issue comes out with a link to download it, but as it is I keep forgetting to visit the web site regularly to get the latest copy.

For many people, email is still the main push protocol they use to receive content and it's still useful even to those of us that also use other options.