is as cool as I thought. I'm using it within my developer VM's to push code to client staging servers, setting up private p2p VPNs to tunnel ssh, SMB, http, vnc and doing checkouts via darcs/svn/etc. directly from one machine to the other.
going to save saving me a lot (!) of time.
Oddly enough, the biggest users of hamachi are gamers looking to set up their own private multiplayer servers. Of course, gamers adopting cool new tech is not odd. What's odd is that from reading the forums you don't get the sense that projects like iFolder are getting excited about hamachi... but they should, since iFolder gets to be much closer to Groove once you remove the firewall restriction. Of course, *many* apps become hugely more interesting once you add easy firewall traversal to them. And consequently many services become much less valuable if this is easy, like hello.com, gotomypc, video conferencing etc.
Hamachi is highly disruptive tech at the pricepoint of free.
Microsoft knows this, of course, and is planning to build p2p vpn's into Vista. But why wait till 2009 when all your friends and client's servers have it deployed? :-)
Hamachi is Windows-only at the moment, with a linux version imminent.