What's the purpose of a service like UltraDNS ?
 

https://www.ultradns.com/index.cfm

the managed DNS service... I'm not getting what it actually does. I mean what can they provide that your hosting companies' DNS doesn't?

Anyone know/have experience with them?

you can edit your dns info yourself

also i imagine some hosts don't provide dns service and this eliminates you having to run your own dns on your box

Ill tell you what I use it for.. I assigned a DNS name to my network at home so when Im on the road and want to connect at home network I dont have to worry about what the IP's are to my network, cause my internet provider changes every once in awhile..I just use the name assinged to it.

ex: ill connect to my machine using ''laptop.dns.info'' intead of 27.247.121.4

I assing diferent names to all my machines.

nice, do you also use this for your sites???