In about another 2-3 years (my estimation) the "retention war" will be completely over. That's because by then, assuming current trends hold, the major usenet providers will no longer be retiring articles from their servers at all.
They're not far at that point now, NSPs currently spending on average about 6 months of the year spooling up, and the other 6 months retiring articles. Highwinds current ongoing spool-up will be 300 days [going from 100 to 400 days retention] - that's almost a solid year of retention being added in one operation.
When server capacity is added at greater than the rate of posting volume, and never allowed to lapse, at that point then retention essentially becomes non-expiring.
It's even possible that Highwinds might not stop at 400 days (they originally planned for 250d retention at the start of their current upgrade) and instead just keep adding another 150 days of capacity, then another 150 days, ...
In the meantime, there could even be a race between providers to see who can be the first to reach the point of "no-article-deletion" status. In this "sprint to the finish" maybe September 2008 will mark the date of the oldest binary articles ... forever!
... just something to think about
