Creating an RSS feed in ASP.NET 3.5

How would you create an RSS feed in ASP.NET 3.5 using C#?

What framework pieces would help in making the publishing of an RSS or Atom feed easier for the .NET developer?

Are there any extra features in .NET 4 to make this task easier than in 3.5?

What is RSS and how do you use it?

An RSS (Really Simple Syndication) feed is an online file that contains details about every piece of content a site has published. Each time a site publishes a new piece of content, details about that content—including the full-text of the content or a summary, publication date, author, link, etc.

There's a new namespace for this in 3.5 called System.ServiceModel.Syndication.

Kevin Miller has a great writeup on this, not a whole lot too it with the new namespace, check out the article, no need to repost here, example code is much easier to look at in my opinion.