It's open to the public and provides a shared 32kbps uplink to the Internet. The hardware costs are being shared by people who use it regularly. If you plan to do so as well, you will be asked for a donation (less than CZK 750)
After paying your share of the costs, it will be possible for you to negotiate an individual Internet account with one of the CZFree i-gateways, providing faster Internet connectivity.
I do not plan to translate all the stuff into English. Feel free to contact me for further details. The contact information can be found at the bottom of the Czech page, as well as the network configuration.