New to the CrackBerry app store is a cool app called Push2Talk. It does just what it says, providing two-way push to talk communication over BlackBerry devices. There have been a few attempts at this in the past (remember HipVoice?) and Verizon has even added the feature to the Tour 9630 and Bold 9650. The feature can be useful for a number of reasons, and $4.99, it's not going to break the bank.
Push2Talk installs on your device and has a simple interface. You can add contacts via PIN, and when accepted they instantly show in your contact list in the application. After you're up and running and have added a contact, just press the left convenience key and talk away. While the message isn't transmitted in real time, its pretty darn close. In tests it ran clear for the most part, with some messages getting clipped at the end (I found holding the key a bit after speaking helped this). There are a few downsides, the biggest of which is the app takes over the left convenience key. If you're on the homescreen and press the key, you'll be taken into the app (unfortunately there is currently no way to change this). Also, the messages are limited to 10 seconds or less which at first was kind of annoying, but once you get into it doesn't seem all that bad. There are two volume options and a message history (the app doesn't save messages, just shows a log) but no real settings after that. I didn't like the fact that the messages just start playing, and would have preferred an alert of sorts on the first message. Overall though Push2Talk is a pretty cool app that I'm sure some will find useful. For a one-time $4.99 fee its not a bad price if you have a good use for it. Hit the link below for more information.