TolmanlandThis style mic is intended to pick up a decent field of sound around it. If you want more isolation you'd want a directional mic, something more like a Shure SM58, etc. If just gaming or doing teleconferences any cheap mic on a stand will do.
TolmanlandI would just get a comfortable headset for gaming or teleconferences, honestly. I've been using everything from $14 Walmart cheapo headsets to $80 Skullcandy SLYR and similarly priced Razer for both voice calls and gaming. I like the Razer best.