Paul FordKind of an obscure one--there was a point in the 80s where lots of people were buying ovoid spotters and hooking them up to antennae in order to find either intelligent life or to reveal ghosts or energy sources. So you had to buy the whole stack, the ovoid spotter, the phantom inverter, and the signal exporter, and it could easily run thousands. Fun though!
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.