encyclo - 11:20 pm on Jul 12, 2004 (gmt 0)

Firstly, the .org registry has been doing exactly this for months, so VeriSign aren't the first.

Secondly, it won't directly affect DNS propagation when you are, for example, changing hosting companies or servers - that depends on the TTL (time-to-live) - it only helps brand new domain names appear more quickly on the root-level DNS servers, allowing them to propagate out more quickly.