One of Android 2.3.4's main new features, which was officially released to the Nexus S late last week, was video and audio calling in Google Talk. While having this feature on the Nexus S is great for its owners, Android users of other devices were left behind. If there is one thing Android users don't like to do, it's wait, which is why britoso from xda managed to rip out the app from his Nexus S and modify it to be compatible with most devices running Android 2.3.
Unfortunately, because he had to modify the apk, he needed to sign it with a different key, which means you need root to install this version (you won't be able to install it over the original Google Talk app as an update due to mismatched signatures, which means you need to uninstall the original app first, and that's not possible unless you're rooted - Google Talk is a system app).
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