Post Modern
Author: Dan Katz

U L-B S E R D
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Y U D-J-O M N
| | |   |   |
T-R A R-U L-A
    | |   |
H D-E N O Y F
      |   |
M-O L-A A-R A
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I D-B V I-D G
    |       |
G-O-L E X-A-N

As shown above, by moving orthogonally through the grid, one may find
the names of five blog hosting sites: BLURTY, DEADJOURNAL, BLOGGER,
XANGA, and DIARYLAND. The unused letters spell out USER
MHOFIVE. Coincidentally, there is a user with that name on each of
these five blogs at the following addresses-- each one of them is
labelled "Checkpoint N" where N is a number from one to five, and each
has an alphanumeric string:

Checkpoint 1 - HHLOL9HWH - http://mhofive.modblog.com
Checkpoint 2 - TEIUC1TEW - http://blurty.com/users/mhofive
Checkpoint 3 - TDVRO4MLO - http://www.deadjournal.com/users/mhofive/
Checkpoint 4 - PAENM7LFR -
http://members.diaryland.com/edit/view.phtml?user=mhofive
Checkpoint 5 - TNJA19TTD - http://www.xanga.com/home.aspx?user=mhofive

Interlacing these letters (or stacking them and reading down the
columns) we get

HTTP THEDAN LIVEJOURNAL COM 191479 HTML TWELFTH WORD

The twelfth word of the blog entry at
http://thedan.livejournal.com/191479.html is EBAY.