epochs

I was refining the guide part about epochs, and after gleaning information from the FreeBSD ports collection documentation I followed their lead and wrote the final part below for our guide. But do we consider this a good practice? Or is it only a FreeBSD thing? "An epoch is not needed for most ports, and good use of a port's version can make using an epoch unnecessary even for application distributions without official version numbers. For example, if an application version 1.5 is superseded by a snapshot release 20081022, the new release could be given version number 1.5.20081022, rather than 20081022, so the newer release will have a numericaly greater value." Mark