Most Important Elements inside a RSS/Atom feed

Question

We're building an "on-demand" feed parsing service (http://superfeedr.com) that developers can plug directly into their own applications. Instead of building your own feed parsing module, and spending days in setting it up and maintaining it, we do the "hard" work for you and our service sends you updates in real-time and standard ATOM format.

So far when we parse a feed, we only extract and send the entry title, link, published date and summary.

Which other elements would you expect to receive from our feed parser?

Answer 1

Author's name.