[The_rationalist]

What about neutrino communication? It's the biggest spectrum we haven't analyzed yet and it would perfectly make sense for an advanced civilization because it pass through matter much better than any other alternative.

[tlb]

Passing through matter isn't a big problem with interplanetary communication? With a few antennas distributed around the respective planets (and a few in orbit if you want to work during eclipses) you can ensure line-of-sight transmission.

[jacobush]

Did anyone do High Frequency Trading with neutrinos yet?

[andrekandre]

no, but i heard tachyons are great for dealing in futures...