I know it''s a very broad term.. but I''m going to have to start working on my networking soon, so I was just wondering what techniques are out there.

I think you''re looking at this from the wrong angle. How can you improve a system that isn''t there at all?
So you''d better ask how to implement an RTS in the first place. Of course, performance considerations do play a role in this as well.

RTS typically don''t communicate actual unit coordinates but player commands. The movement of units and game logic such as firing etc.. is then run on all computers.
This system can be implemented as both peer-peer and client-server.

cu,
Prefect