Kodiak Networks has inked a deal with RIM to bring push-to-talk functionality to BlackBerrys. Cingular Wireless already announced support for PTT with the BlackBerry Pearl [1], however, Kodiak claims deals with other carriers are already in the works. Currently, Kodiak's PTT offering is used by Alltel, Cingular and a few MVNOs, but since RIM is signing on it's a safe bet that other carriers have already done so as well. Those that haven't are sure to take another look, too.

For more on the Kodiak-RIM deal:
- see this article [2] in CNET