Farcasting describes a mode of travel at the speed of light across vast distances of space. It is a travel method only possible for digital consciousnesses however. As beings of pure data, informorphs can "travel" to other locations via data transmission. This is illegal in many jurisdictions, as long distance telecasting of an informorph essentially copies the data construct and then requires that the original left behind at the point of origin is destroyed.
This also introduces the "coin-toss problem" - copying and destroying a digital consciousness means that the original can never be certain if this consciousness will continue in the traveled copy, or be the one destroyed.