What role did information warfare play in the Russia-Georgia war?

We’ll need to break down IO into its components.

sigintel @5:55 covered EW.

I expect it will be quite some time before anybody with inside knowledge of Georgian or Russian MILDEC share with us.

Same with OPSEC.

CNO played a large role, perhaps appearing larger to those in the West noticing the .ge sites go down and pop back up on blogspot. Georgia wasn’t as wired as Estonia, so probably they weren’t as vulnerable to CNA. My perception has been managed to credit the RBN cyber mercenaries for Russian CNA successes.

PSYOP. The whole Russian invasion of Georgia was PSYOP aimed at intimidating all the former Soviet republics and Warsaw Pact members. The kinetic portion in Georgia serving to add fear factor to the nonkinetic portion.
Portraying Ossetes as innocent victims of Georgian aggression was PSYOP.
Flooding the blogosphere with easily identifiable trolls was PSYOP which I do not think worked as intended.
Lots of open source discussion on Russo-Georgian War CNO and PSYOP, and the final words won’t be written for a long time.