[xwiki-users] Questions about myxwiki

Hi everybody, my name is Kévin Laîné, i'm a french guy. I'm working on a collective project about "alternative models of family". Xwiki seems to be the best community tool management I've discovered. I'm really interested for opening an xwiki on the "XWiki Community farm". I have some questions before asking you to open a session. 1) Is it possible to use a domain name like "domain.tld" instead of "domain.myxwiki.org" ? 2) Is it possible to install some extensions as bulletin board or others ? 3) Is it possible to embed "Nabble Free Forums" or other Nabble apps ? 4) Is it possible to make private backup of the xwiki ? Vincent Massol is working on "Alternate URL Scheme"  http://dev.xwiki.org/xwiki/bin/view/Design/AlternateURLScheme 5) When it will be ready could I use this option on myxwiki even if I my xwiki is in production ? Thank you very much for your answers.