I'm sorry I don't have a spare one to give out. I got a second invite through Kits friend, but Richard has told me that you can't just pass the url on to someone else; you have to be invited specifically within GMail. Sorry

I told Kits' friend this, but I still got the URL. If I turns out that I can pass it on, then I shall. Of course if GMail give me some invites I'll offer them through here. Damien has first dibs.
Also, it isn't true about GMail and Hotmail. My invite was sent to my Hotmail account (both were actually), and I recieved it fine. I also sent a regular e-mail from GMail to Hotmail, and that was delivered fine too.