[imaginator]

+1 on Freifunk. Setup is super easy:

1) order an Ubiquiti Nanostation LOCO M2 (amazing reach and super sensitive antenna),

2) sign-up with them for a VPN key. This will keep your visitors traffic tunneled through their VPN. IF there is any problem with content infringement, it ends up on their network.

3) Flash the box with their OpenWRT port and install the VPN key.

I setup my box last week and and it's been running well (http://monitor.berlin.freifunk.net/host.php?h=imaginator). Nice to see users dropping on and off. The firmware also includes support for the Freifunk mesh network. I'm looking forward to adding more nodes to the neighbourhood and growing the wifi coverage.

Action shots: http://imgur.com/a/q7nOk (Decided that martini bottle is a better solution than the tripod)

Get started at http://config.berlin.freifunk.net/wizard/routers (disclaimer: not clear if you should/must/can be in Berlin for this to work)