RSSContact.com is an RSS feed for your personal details.
If someone subscribes to your RSS Contact then they will automatically be notified when you update your details
…wow if this was adopted universally, you wouldn’t have to email friends about you changing house address, or your phone number, or your new email address
…imagine if your car insurance, bank, work, phone provider, internet provider, etc… subscribed to your RSS contact…you could shift house without having to tell anyone.
The only problem is that it lacks an RSS button for easy subscription, at the moment you can only formally invite people by email with a link to the RSS feed (unless I just can’t find it)
A way around it is to invite yourself and then put the RSS contact link on your blog.
An earlier tool that does the same thing is Kunekt.