The key issue here is missleading route and fare information. If (as Southwest claims) that Orbitz shows bogus flights and fare information, this needs to be halted.
The example given is between Palm Beach and Orlando Florida. Orbitz shows the only way you can fly between these two cities on Southwest is by way of Tampa or Ft Lauderdale when in reality Southwest offers 3 non-stop flights per day.
If you look at other misrepresentations and bogus and invalid fare and schedule information, Southwest has every right to sue Orbitz.
United would do the same thing if Orbitz showed the only way to fly on United between SFO and ORD was through DEN.
If this is any indication of the superior software that Orbitz uses, all I need to say is no thank you.