From the July 2008 ARRL Board of Directors Meeting:

"The Board also acted on the Programs and Services Committee report,
voting to eliminate Rule 5 from Section III of the DXCC Rules. The
Committee realized that while publishing log data can have a
detrimental effect on operating awards, it was not possible to control
such actions and the rule cannot be enforced. As part of an effort to
maintain the integrity of operating awards programs, the Board called
on staff to create resources and guidelines for QSLing and for QSL
managers. These guidelines will help people who QSL to understand the
"best practices" and help to support the work of the QSL manager so
that access to log data won't degrade Amateur Radio's long tradition
of the "honor system."

The rule reads:

5. The presentation in any public forum of logs or other
representations of station operation showing details of station
activity or other information from which all essential QSO elements
(time, date, band, mode and callsign) for individual contacts can be
derived creates a question as to the integrity of the claimed QSOs
with that station during the period encompassed by the log.
Presentation of such information in any public forum by the station
operator, operators or associated parties is not allowed and may be
considered sufficient reason to deny ARRL award credit for contacts
with any station for which such presentations have been made.
Persistent violation of this provision may result in disqualification
from the DXCC program.

"This rule cannot be enforced. In its place staff will create
resources and guidelines for QSLing and for QSL managers in order to
maintain the integrity of operating awards programs."