Right so I've just started using rackspace to host LPs and I'm a little confused.
You set up containers to host LPs but I see you can't nest folders like a traditional file system, this means you have to set up a container for each LP you want to upload.
Each of these containers will have their own URL.
What do you do? Do I CNAME an individual folder on my domain for each rackspace URL or do I just ignore domains and just use the rackspace URL?
Am I missing something completely obvious?
Right I've figured out you can just use a pseudo file structure by renaming your index.html files in a container to lp1/index.html, l2/index.html etc.
SO my only question is about how CNAME works,
www.mydomain.com CNAME rackspacecdndomain.com
in DNS records
will, www.mydomain.com/lp1/index.html resolve to rackspacecdndomain.com/lp1/index.html
?
Update, the answer is yes
You need to setup a sub-domain in case anyone is wondering
so, cdn.mydomain.com CNAME rackspacecdndomain.com
answered my own questions 
Using cyberduck to connect to rackspace makes working with the files a lot easier. It lets you view/add/remove folders like any other FTP server.
Yes, don't use their interface, it's horrendous.
It uses a typical file structure as you would expect but in their interface it displays folder contents all in the same view e.g.
index.html
lander1\index.html
lander2\index.html
something\else\index.html
Obviously a bitch to read. I have found CyberDuck is the best for this. I had to download an older version of it because some new encryption/connection method it used wasn't letting it connect to my Rackspace files.
Yeah it is just a dick for me because FML, i'm sure you understand haha.
Of course, doesn't work > close down > start again > works again for some reason