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It is surprising that these networks aren't more popular. There are still many places and situation where connectivity isn't available

• butvacuum 8mo ago
  Because they're terrible and fall apart if more than a few score people are on the same freqency at the same time.
• esseph 8mo ago
  It's because they aren't very resilient. More of an experiment than a purpose designed tool for the, uh, current environment.