<hr><i>ron added on 2010-03-08 05:16:39:</i><br>
It is also an issue for those of us hosting on shared servers where we don't have a fixed IP.  However, that is an SSL issue -- how to get around the problem of IP-specific SSL certificates?  

A typical problem scenario would be a small business or project, which hasn't the funds to buy a "wildcard" SSL cert, but wants to prevent snoopers from reading the project data as it moves on the wire.