"Have you ever, ever felt like this. When strange things happen. Are you going round the twist."
I just wanted to mention a poor experience with Windows Live ID, in particular Windows Live ID "rename" - yes there is such a function. It will allow you, in most cases, to change your Live ID e-mail address - but only if that e-mail address is outside the domain of Hotmail or Llive - to my knowledge.
The problem is, now many days after, the Live ID is now in a strange state of limbo where it superficially appears to have changed and indeed, it is possible to login with this new Live ID, but it hasn't really fully changed. That manifests itself in that e.g. Windows Live Messenger does not update contacts so they get the new address. Instead it appears to all contacts that my new Live ID is offline and vice versa. It manifests itself in that Windows Live does not allow me to have full control over editing certain entities like music and movies.
Just a word of warning as I've now reported it to the Live ID newsgroup and to their support but if you are considering it, be mindful of this risk. It looks like I'll have to disengage from this defect ID and create a new account and new matching gmail account alongside with it (I dare not reuse the old one out of angst to foobar the system even more).
I've given up on anything to that regard ever happening with Live ID. I've been waiting for the ability to merge accounts since forever, and I think they posted that this was "coming" once... several years ago.
It's pretty annoying, since most Live features that deal with contacts are now useless to me. I have one Live ID for my messenger accounts, and another one for everything else. I really want to keep using the 'everything else' Live ID and just change my messenger account to use that ID too.. But I'm stuck using the old Live ID for all messenger related tasks.
This is especially annoying now that you have to log in to some webste to change certain messenger settings... I'm already logged in to all websites using the other ID, so I get the "you are already logged in with another Live ID" message. Which gives me the option to change ID's, but that never works. I have to delete all cookies to actually log out of all Live ID services and websites, log in using Messenger's Live ID, change a setting, delete all cookies again, and log back in to all Live ID services with my other account. User friendly!