The rapid aging off the front page of diaries on popular web sites (like dKos) has led some regular diarists to post on multiple sites. I assume they feel that the longer visibility of their postings on sites like this one will give more people a chance to read the item before it becomes "invisible".

The problem is that the conversation becomes fragmented. Insightful remarks on one site are not seen by those on the others. The blogosphere needs a way to dynamically link these mulitiple postings.
This way the item could appear in several places, but there would be only one conversation.

Any web gurus out there want to try to implement this?