General Interest

Unbound Spiral: Planetwork WiFi, FOAF, XRI

September 26, 2003 10:22 AM

I went to the monthly Planetwork forum on Tuesday night and made a few notes to share on SFLan, The Green Museum and a LivingDirectories update. Helped with insights on WiFi developments, more opportunities for blogging and some further insights into FOAF and XNI.

SFLAN
SFLan was presented by Ralf Muehlen and is an experiment in providing a community wirelss network in San Francisco. They are making good progress. By their calculations 20 stations at a cost of $1000 each are required to cover San Francisco. This is what Brewster talked about at Planetwork. I can't understand why they don't just say we need 500 of these things to cover the whole Bay Area. Collecting $20 donations wouldn't be that hard.

Some characteristics of SFLan:


  • Symmetrical networking: everyone can be a server with a real, routable IP address and full uplink bandwidth.
  • Uninhibited networking: no commercial policies limiting streaming or particular formats.
  • Through-the-air backbone: touching the wired Internet at only a couple of high-bandwidth places.
  • DVD video speed: 1 - 5 Mbits/sec now, getting faster every year.
  • Distributed ownership of the network nodes: this could change networking in the same way PCs changed computing.
  • Cooperative development and support.
  • Riding Moore's Law: spend the same amount next year and get twice the speed


  • The Green Muesuem

    The Green Museum is all about environmental Art. Designed to help inspire people in art and culture. It's open 24 hours per day. Online exhibition of soundscape art. Art as information. I found myself inspired by Sam's comments while lookint at the site and wishing my RSS feed could be nurtured artistically every day. Post the session we had a detailed discussion on weblogs, newreaders, and potential ideas for engaging the broader community in this effort. This mueseum is receiving grant money and may receive more. Just like the physical ones this one may have a different cost structure, it too must chase visitors. We are going to see more Museum Blogs.

    LivingDirectory (Formerly Friendly Favors)
    Victor Gray began introducing his subject referring to Marc Canter who has been suggesting to everyone that provide part of the profile as FOAF data. So here's Victors FOAF profile. This illustrates how many directories could execute a vaild FOAF file So while this is a valid FOAF document Victor said that some of the FOAF files sort of horrified him. Apparently all the FOAF tags are agreed upon upon as a certain sort of data. However there are no FOAF tags for city, state, country and apparently no concept for an error document. Think that means tha bad FOAF leads to 404 screens.

    ( foaf:Person> foaf:name>Victor Grey foaf:firstName>Victor foaf:surname>Grey foaf:mbox_sha1sum>759c9f8d6317f0be5727bd85aaccf7ebc70ffcb7 foaf:depiction rdf:resource="http://livingdirectory.net/pics/FF/139.jpg" /> foaf:homepage rdf:resource="www.customdynamic.net"/> /foaf:Person> /rdf:RDF> /blockquote> See the crypto hash of Victor's e-mail address. It is unique to his e-mail address. There was a comment that if you had a completely crawlable network .... could send spam from my set of friends... It is not clear to me what contracts and permissions are incorporated in this.

    Took it that Victor wasn't that impressed with FOAF and has moved on. He then showed his XRI profile with a unique identifer on the bottom line that cannot be spoofed. XRI is running on the foundation that makes the internet run.

    ( ?xml version="1.0" ?>
    - element xmlns="http://xri.xdi.org">
    xri>=VictorGrey
    xri>=:(@:LDN:FF/:139)
    - element>
    xri>+formatted
    data>Victor Grey
    /element>
    - element>
    xri>+picture
    data>http://livingdirectory.net/pics/FF/139.jpg
    /element>
    - element>
    xri>+affiliation
    data>Programmer - LivingDirectory
    /element>
    - element>
    xri>+location.city
    data>San Francisco Bay Area
    /element>
    - element>
    xri>+location.state
    data>California
    /element>
    - element>
    xri>+location.country
    data>United States
    /element>
    - element>
    xri>+postal.address
    - element>
    xri>+work
    data>P.O. Box 6722, Concord, California 94524 United States
    /element>
    /element>
    - element>
    +fax.number
    - element>
    xri>+work
    data>925-682-9133
    /element>
    /element>
    - element>
    xri>+website
    data>www.customdynamic.net
    /element>
    /element>
    /blockquote>

    See this CNet article for further explanations. "Standards body tries to improve on URLs"

    The next Planetwork meetup date is October 30th at the Exploratorium in San Francisco.