How many CMSs does your team run, and why?

We launch Mishka CMS on Nov 22. It runs all your websites from one install: each site gets its own domain, pages and users, you edit in a visual editor, and changes go live without a redeploy.

Before launch I'd like to learn from you:

• How many sites do you or your clients run, and on how many different CMSs?

• What's the most annoying part of keeping them all up to date?

• If you've ever moved a site off WordPress, what broke or took the longest?

Your answers will shape what we fix first.