] The SRV RR allows administrators to use several servers
] for a single domain, to move services from host to host
] with little fuss, and to designate some hosts as primary
] servers for a service and others as backups.

Unfortunately, noone uses them. I claim that the main reason for this is the lack of support in (free (not GPL)) resolver libraries. I have a minimally working implementation that I will probably release under a BSDish license in the next few days.

SRV records might, for example, make sitefinder much less bad; if the wildcard were

*.com IN SRV host=sitefinder.verisign.com port=80 priority=1 weight=1

rather than

*.com IN A ...

I expect that the effects would be much less disruptive, i.e. browsers would be redirected but everything else would not.

So first, we have to get resolvers out there and then we need to get software fixed. Who's with me?

A DNS RR for specifying the location of services (DNS SRV) (RFC2782)