Acknowledgments

This work is based upon the previous work of many people. Specifically, we would like to mention Dave Winer, original author of ``enclosure'' element in RSS 2.0 specification[5]. We have also borrowed many concepts and ideas from a variety of internet standards and proposals. Most of our sources are listed on page .

Many people provided valuable comments and suggestions. We would like to mention Suzan Foster, Reto Bachmann-Gmuer, Danny Ayers.