I originally bought one of these just to mess with my friends over Xbox Live, as anybody else would, and it fulfilled that completely. However, it wasn't until I spent some time tinkering around with it that I learned that the Smack Talk comes with more that just recording five-second voice clips.
Before I delve in, I noticed that many people gave this product negative reviews because they were able to hear their recordings, but nobody else could. After messing around with the Smack Talk, I learned that, for example, if you record a quote into it from your computer, you should set your computer's volume to maximum. That should make it so others can hear it just fine, unless the quote or music itself is too quiet.
Anyways, now I'll explain the Smack Talk's awesome, hidden feature. The best way to explain this is through an example. SO, for example, say you're gonna record a five-second section of a funny quote. You would load the quote on your computer, plug the stereo cord into your Smack Talk, and record it.
This is where the magic happens. If you let the quote play while your in-game (not pressing the record button or any of the numbered buttons), the quote will play through your mic without you having to press record or be limited to a five-second cap. This can lead to some really funny moments with other players, and I can say it's definitely worth it. Combine this with a capture card and you can make some hilarious videos!
Also, a word of advice, your mic will not work if the stereo cord is plugged in.
The gameDR Smack Talk is an awesome little device that surprised me with how many features that WEREN'T listed, and at $13, it is a great deal.