Serence´s Klips let you publish a klip which users can view in their klipfolio for free! KlipFolio is the smallest RSS Reader to day.
In the
klipfarm you can find thousands of other sites who, just like RSS or ATOM, publish KLIPs.
After you have
created your klip as a Klip Provider, you can publish it and get a button like this one:

By simply cliking this button (click it!) users can add the KLIP to their Portfolio Manager to stay up2date to your site. Ofcourse they need to
be KlipFolio users.
They will then see the update to your site in their Portfolio Manager like this:

The Klip itself is a simple XML file, you could just refer it to your existing RSS feed but it enables you also to make a much more complex klip by using JavaScript. When you download the KlipFolio SDK you get a reference in PDF format which explains everything in detail. Interesting ideas on how to evolve your klip are on
the KLIP blog and the
Serence Forum. You could even check one or more of the
25.000.000 pages in Google on KlipFolio (like doing all kind of fancy php stuff with it).
After your Klip is Live you can follow statistics and see how many people downloaded your klip and are actually using it.
Get it
here !