There are a lot of variations of marketing and advertising plays around email that could be copied into the RSS world. There's a few ideas I've been bouncing around in my entrepreneurial circles that I am not quite ready to share.
A few issues:
1. Advertisers aren't using RSS as a way to communicate to their customers directly like companies use email newsletters. This seems like it is about to change, though.
2. There are no ways to know absolutely how many subscribers a feed has or how many people are reading something. And the only way to guess is if you are the feed publisher or the feed aggregator.
3. There are so many aggregators. This is helpful, though.
4. Email marketers like demographic data about their subscribers. How do we get that info, even in aggregate, about RSS subscribers? (?, ?, ?)
And a nice reason to explore:
RSS aint spammable. So, even though there are plenty of legit email marketers, companies that market through RSS won't ever have to hear, "stop sending me spam" which is defined not by experts that understand the difference, but by every idiot that receives email.
Anyone have anything to add to this? Anyone know any way to get around challenge #2 above?