Given the demand for Live Mesh invites, this thread might hopefully make it easier for you to get one. Note that all new members now only get 1 invite, so please if you are invited from someone here, invite someone else from here who needs one.
You get the invite immediately after logging on for the first time, and to invite someone you just need to share a folder with them by entering their email address. See this post for more information.
So if you want a Live Mesh invite, please drop your email address down below (note we make no guarantees that you'll get one!)