I am a Joost beta user and you can be too! I just got two invitations so if you want one just comment with the name and email you want me to send it to. The first two takers get them... I installed Joost a few weeks ago (right about the time they changed the name from Venice project and while I liked it then there was not a lot of content so I gave up in it. There has been a fair amount of press since then and things are really looking up for it, so I am going to have to give it another try soon...