&#62; Not when those open systems risk confusing and alienating people who just want to check their mail.<p>Speaking of mail, I would like to be able to host it at home, where it should be. (It's private, after all.) Thanks to the walled garden policy of blocking the outgoing SMTP port (and no one complaining, because web mail is soo convenient), I can't.<p>If Trusted Computing ever becomes the default, it won't be long before using open systems becomes a major hassle. Because, you know, they are dangerous, infected by viruses, used by cyber-pirates, in a word, <i>suspects</i>. Just like home hosted mail servers.