For one, it's quite cheap! Only 24€/$25. I think you have to build a small portion of it, but the build looks simple enough someone with my crap skills could even do it.
From the user manual:
[The WiC64] is a parallel WLAN interface for Commodore computers with user port connection. In contrast to the previously known "modems", the WiC64 works in parallel mode with 8 data lines, 2 handshake lines and one control line. That speeds up data transmission by a factor of 20: The WiC64 can load 202 blocks / 50kb in 2.5 seconds from the internet - via HTTP:// or TCP connection. It gives the computer full access to the internet and the possible applications are almost unlimited. From simple applications such as synchronising the time with an NTP time server via the internet, loading data and programs from web servers or from PHP scripts to complex chat and messaging systems, everything is possible. The complete hardware and software is open source and can be extended as desired.
Interesting notes from the store page:
How to fix, according to the developer.Important note for SX-64 users:
The user port on the SX-64 must be wired correctly, but it is NOT from the factory - Commodore made an error on the circuit board that must be rectified beforehand...
It also has a "portal," which is in development, where you can chat with other folks and download games. At some stage, this will provide head-to-head games as well.
You can also use the device to set its internal clock and use the internet to keep that time absolutely perfect. Maybe that matters to some C64/128/vic-20 folks?
Since it is open source, there is also an extra component some folks might want to purchase so they can create new features for the device as well.
In any case, I imagine most of us all have WiFi modems to hop around on telnet BBSes these days. For that matter, the BBSes I connect to couldn't handle bonkers speeds - I generally dial in at 9600 baud, which feels plenty fast. But a device that kinda breaks the sound barrier so folks can play online multiplayer games sounds interesting.