Braumüller, is a networker, mail artist, visual poet and painter, currently living in Hamburg, Germany. He has been active in mail art since he was introduced by the Chilean visual poet Guillermo Deisler. In 1995 he founded with Merlin aka Klaus Rupp, the networking art platform crosses.net on which they publish their art projects and collaborations with many other artists. They also hosted there the mail art forums, which are used extensively by the mail art community. Wikipedia
The definitive Wikipedia entry for Hans Braumüller. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Hans_Braum%c3%bcller