lorax - 1:24 pm on Feb 25, 2012 (gmt 0)
Welcome to WebmasterWorld.
It's always a good idea to have a "sandbox" where you can build and test but it has to be kept up to date. Ideally it has it's own database too - just in case you inadvertantly delete something you shouldn't have. As for SEO, just put the sandbox behind a secure access (username & pwd) and they won't ever see it.