The Labtec Axis 322 Headset with Boom Microphone may appear to be a good inexpensive microphone and headset for use in online games and internet telephony, but it's less than ideal for a variety of reasons.
While most microphones use USB, the Labtec Axis 322 uses the 1/8" audio jacks for headset and microphone. It's perhaps only a tiny hassle to hook up one extra cord, but it also means you can't leave it attached to your system if you want to use the speakers. Most USB microphones can be configured otherwise so that they can be left attached all the time. Additionally, the extra cordage adds some weight to the entire setup.
The boom mic isn't as adjustable as many other models of headsets, but my biggest gripe is the headphones. They contain the padding like a larger earcup style of headphone, but are small enough that they cannot encompass the ear. This just feels awkward. The headphones need to be larger or without the padding.
There is no independent volume control or mute button, which is a big drawback as well.
If you can find these cheap enough, they may be OK, but don't plan on using them for an extended period of time in one sitting or in the long term, as they just aren't comfortable nor do they have the features of marginally more expensive headsets with microphones.