The largest Blog Tag Tree for the 5 things meme is at www.soloseo.com/blog-tag-tree.html. This is a Delphi-and-related specific version, since Nick Hodges started it without being tagged, he is the starting point for the first branch. The second branch, started by Jonas Hogstrom, has a long ancestry outside of the Delphi world:

  1. Nick Hodges
    1. Steve Trefethen (no more links)
    2. Allen Bauer
      1. Bob Swart
        1. Danny Thorpe
          1. Brian Long (blog)
          2. Chuck Jazdzewski (blog)
          3. David Lock (blog )
          4. Brad Abrams (blog )
          5. Siebe "Inky" Tolsma (offtopic tags)
        2. Hallvard Vassbotn
          1. Jon Shemitz (site)
          2. Dan Miser
            1. Steve Trefethen (also tagged by Nick Hodges)
            2. Rich Werning (no more links)
            3. Mark Edington (blog)
            4. Geoff Lane
              1. Brennan Stheling (blog)
            5. Chris Peterson
              1. James Roome (blog)
              2. Brian Kapellusch (blog)
              3. Cobbie Berhend (blog)
              4. Vibhu Srinivasan (blog)
          3. Chuck Jazdzewski (also tagged by Danny Thorpe)
          4. Lars Fosdal (site)
          5. Ingvar Nilsen (site)
        3. Holger Flick (no more links)
        4. Pawel Glowacki
          1. Fredrik Haglund (blog)
          2. Roy Nelson (blog)
          3. Tim Jarvis (no more links)
          4. Charlie Calvert (blog)
          5. Jason Vokes (blog)
        5. Steve Trefethen (also tagged by Nick Hodges)
      2. Marco Cantu (no more links)
    3. Mark Edington (blog)
    4. Eric Sink
      1. Ian (no more links)
      2. Ed Thomson (outside Delphi)
      3. Martin Woodward (outside Delphi)
      4. Eric Rudder (blog) (outside Delphi)
      5. Robert Scoble (post predates this tag)
    5. Steve Teixeira (no more links)
  1. Jonas Hogstrom
    1. Holger Flick (also tagged by Bob Swart)
    2. Jan Nordén (blog)
    3. Jesper Hogstrom
      1. Anders Ivner
        1. Jens Gustavsson (blog)
      2. Henrik Jondell (blog)
      3. Malcolm Groves
        1. Guy Smith Ferrier
          1. Chris Myhill (blog)
          2. Steve Tudor (blog)
          3. Steve Scott (blog)
          4. Craig Murphy (blog)
          5. Dave McMahon and Richard Costall (site)
        2. Brian Long (also tagged by Danny Thorpe)
        3. Chee Wee (blog)
        4. Richard Vowles (blog)
        5. Tim Jarvis (also tagged by Pawel Glowacki)
      4. David Clegg
        1. Diego Barros (tags outside Delphi)
        2. Chewy (also tagged by Malcolm Groves)
        3. Richard Vowles (also tagged by Malcolm Groves)
        4. Malcolm Groves (also tagged by Jesper Hogstrom)
      5. Danny Thorpe (also tagged by Bob Swart)
    4. Peter Morris (blog)
    5. John Kaster (blog)

I originally started building a program to get a picture of the entire 5-things meme, but after realizing how huge it is (probably thousands of posts) and how little I could automate the traversal, I ended up with a smaller Delphi-specific tree and quite some manual work.